This reverts commit 35136e1e.

test-spec has been failing since this revision.

.github/workflows/compilers.yml:82
https://github.com/ruby/ruby/actions/runs/4276884159/jobs/7445299562

```
env:
  # Minimal flags to pass the check.
  default_cc: 'gcc-11 -fcf-protection -Wa,--generate-missing-build-notes=yes'
  optflags: '-O2'
  LDFLAGS: '-Wl,-z,now'
  # FIXME: Drop skipping options
  # https://bugs.ruby-lang.org/issues/18061
  # https://sourceware.org/annobin/annobin.html/Test-pie.html
  TEST_ANNOCHECK_OPTS: "--skip-pie --skip-gaps"
```

Failure:

```
  1)
  An exception occurred during: Kernel#require (file extensions) does not load a C-extension file if a complex-extensioned .rb file is already loaded
  /__w/ruby/ruby/src/spec/ruby/core/kernel/shared/require.rb:317
  Kernel#require (file extensions) does not load a C-extension file if a complex-extensioned .rb file is already loaded ERROR
  LeakError: Leaked file descriptor: 8 : #<File:/__w/ruby/ruby/src/spec/ruby/fixtures/code/load_fixture.ext.rb>
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_spec.rb:5:in `<top (required)>'

  2)
  An exception occurred during: Kernel#require ($LOADED_FEATURES) stores an absolute path
  /__w/ruby/ruby/src/spec/ruby/core/kernel/shared/require.rb:330
  Kernel#require ($LOADED_FEATURES) stores an absolute path ERROR
  LeakError: Closed file descriptor: 8
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_spec.rb:5:in `<top (required)>'

  3)
  An exception occurred during: Kernel#require ($LOADED_FEATURES) does not load a non-canonical path for a file already loaded
  /__w/ruby/ruby/src/spec/ruby/core/kernel/shared/require.rb:535
  Kernel#require ($LOADED_FEATURES) does not load a non-canonical path for a file already loaded ERROR
  LeakError: Leaked file descriptor: 8 : #<File:/__w/ruby/ruby/src/spec/ruby/fixtures/code/load_fixture.rb>
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_spec.rb:5:in `<top (required)>'

  4)
  An exception occurred during: Kernel#require ($LOADED_FEATURES) does not load a ../ relative path for a file already loaded
  /__w/ruby/ruby/src/spec/ruby/core/kernel/shared/require.rb:551
  Kernel#require ($LOADED_FEATURES) does not load a ../ relative path for a file already loaded ERROR
  LeakError: Leaked file descriptor: 9 : #<File:../code/load_fixture.rb>
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_spec.rb:5:in `<top (required)>'

  5)
  An exception occurred during: Kernel#require ($LOADED_FEATURES) complex, enumerator, rational, thread, ruby2_keywords are already required
  /__w/ruby/ruby/src/spec/ruby/core/kernel/shared/require.rb:563
  Kernel#require ($LOADED_FEATURES) complex, enumerator, rational, thread, ruby2_keywords are already required ERROR
  LeakError: Closed file descriptor: 8
  Closed file descriptor: 9
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_spec.rb:5:in `<top (required)>'

  6)
  An exception occurred during: Kernel.require (file extensions) does not load a C-extension file if a complex-extensioned .rb file is already loaded
  /__w/ruby/ruby/src/spec/ruby/core/kernel/shared/require.rb:317
  Kernel.require (file extensions) does not load a C-extension file if a complex-extensioned .rb file is already loaded ERROR
  LeakError: Leaked file descriptor: 8 : #<File:/__w/ruby/ruby/src/spec/ruby/fixtures/code/load_fixture.ext.rb>
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_spec.rb:23:in `<top (required)>'

  7)
  An exception occurred during: Kernel.require ($LOADED_FEATURES) stores an absolute path
  /__w/ruby/ruby/src/spec/ruby/core/kernel/shared/require.rb:330
  Kernel.require ($LOADED_FEATURES) stores an absolute path ERROR
  LeakError: Closed file descriptor: 8
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_spec.rb:23:in `<top (required)>'

  8)
  An exception occurred during: Kernel.require ($LOADED_FEATURES) does not load a non-canonical path for a file already loaded
  /__w/ruby/ruby/src/spec/ruby/core/kernel/shared/require.rb:535
  Kernel.require ($LOADED_FEATURES) does not load a non-canonical path for a file already loaded ERROR
  LeakError: Leaked file descriptor: 8 : #<File:/__w/ruby/ruby/src/spec/ruby/fixtures/code/load_fixture.rb>
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_spec.rb:23:in `<top (required)>'

  9)
  An exception occurred during: Kernel.require ($LOADED_FEATURES) does not load a ../ relative path for a file already loaded
  /__w/ruby/ruby/src/spec/ruby/core/kernel/shared/require.rb:551
  Kernel.require ($LOADED_FEATURES) does not load a ../ relative path for a file already loaded ERROR
  LeakError: Leaked file descriptor: 9 : #<File:../code/load_fixture.rb>
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_spec.rb:23:in `<top (required)>'

  10)
  An exception occurred during: Kernel.require ($LOADED_FEATURES) complex, enumerator, rational, thread, ruby2_keywords are already required
  /__w/ruby/ruby/src/spec/ruby/core/kernel/shared/require.rb:563
  Kernel.require ($LOADED_FEATURES) complex, enumerator, rational, thread, ruby2_keywords are already required ERROR
  LeakError: Closed file descriptor: 8
  Closed file descriptor: 9
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_spec.rb:23:in `<top (required)>'

  11)
  An exception occurred during: Kernel#require_relative with a relative path (file extensions) does not load a C-extension file if a complex-extensioned .rb file is already loaded
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_relative_spec.rb:197
  Kernel#require_relative with a relative path (file extensions) does not load a C-extension file if a complex-extensioned .rb file is already loaded ERROR
  LeakError: Leaked file descriptor: 8 : #<File:/__w/ruby/ruby/src/spec/ruby/fixtures/code/load_fixture.ext.rb>
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_relative_spec.rb:4:in `<top (required)>'

  12)
  An exception occurred during: Kernel#require_relative with a relative path ($LOADED_FEATURES) stores an absolute path
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_relative_spec.rb:205
  Kernel#require_relative with a relative path ($LOADED_FEATURES) stores an absolute path ERROR
  LeakError: Closed file descriptor: 8
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_relative_spec.rb:4:in `<top (required)>'

  13)
  An exception occurred during: Kernel#require_relative with an absolute path (file extensions) does not load a C-extension file if a complex-extensioned .rb file is already loaded
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_relative_spec.rb:399
  Kernel#require_relative with an absolute path (file extensions) does not load a C-extension file if a complex-extensioned .rb file is already loaded ERROR
  LeakError: Leaked file descriptor: 8 : #<File:/__w/ruby/ruby/src/spec/ruby/fixtures/code/load_fixture.ext.rb>
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_relative_spec.rb:277:in `<top (required)>'

  14)
  An exception occurred during: Kernel#require_relative with an absolute path ($LOAD_FEATURES) stores an absolute path
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_relative_spec.rb:407
  Kernel#require_relative with an absolute path ($LOAD_FEATURES) stores an absolute path ERROR
  LeakError: Closed file descriptor: 8
  /__w/ruby/ruby/src/spec/ruby/core/kernel/require_relative_spec.rb:277:in `<top (required)>'
```