Merge #3016

3016: Remove unnecessary workaround r=hsbt a=deivid-rodriguez

# Description:

Fix was released with path_expander v1.0.4.

# Tasks:

- [x] Describe the problem / feature
- [ ] Write tests
- [x] Write code to solve the problem
- [ ] Get code review from coworkers / friends

I will abide by the [code of conduct](https://github.com/rubygems/rubygems/blob/master/CODE_OF_CONDUCT.md).


Co-authored-by: David Rodríguez <deivid.rodriguez@riseup.net>

util/bisect

@@ -7,25 +7,4 @@ rescue Gem::GemNotFoundException
   abort "Install minitest-bisect gem to run a rubygems test suite bisection"
 end
 
-#
-# Need to monkeypatch the `path_expander` gem to make sure it uses the same
-# sorted set of files as `rake`. Otherwise `rake test` failures are
-# irreproducible. Can be removed once
-# https://github.com/seattlerb/path_expander/pull/4 is released.
-#
-
-module RefinedPathExpander
-  def expand_dirs_to_files(*dirs)
-    super.sort
-  end
-end
-
-require 'path_expander'
-
-class PathExpander
-
-  prepend RefinedPathExpander
-
-end
-
 load minitest_bisect