Remove DiffHelpers

Author: pirj

.github/workflows/ci.yml

@@ -30,7 +30,7 @@ jobs:
           - 2.3
         env:
           -
-            DIFF_LCS_VERSION: "> 1.4.3"
+            BOGUS: ""
         include:
           - ruby: ruby-head
             env:

Gemfile

@@ -13,12 +13,6 @@ branch = File.read(File.expand_path("../maintenance-branch", __FILE__)).chomp
   end
 end
 
-if ENV['DIFF_LCS_VERSION']
-  gem 'diff-lcs', ENV['DIFF_LCS_VERSION']
-else
-  gem 'diff-lcs', '~> 1.4', '>= 1.4.3'
-end
-
 gem "childprocess", ">= 3.0.0"
 gem 'ffi', '~> 1.12.0'
 

lib/rspec/support/spec.rb

@@ -2,7 +2,6 @@
 require 'rspec/support/spec/in_sub_process'
 
 RSpec::Support.require_rspec_support "spec/deprecation_helpers"
-RSpec::Support.require_rspec_support "spec/diff_helpers"
 RSpec::Support.require_rspec_support "spec/with_isolated_stderr"
 RSpec::Support.require_rspec_support "spec/stderr_splitter"
 RSpec::Support.require_rspec_support "spec/formatting_support"