Remove leftovers from reverted commits

Author: flash-gordon

repository/spec/spec_helper.rb

@@ -58,8 +58,6 @@ def self.remove_constants
 
   config.after do
     Test.remove_constants
-    ROM::Repository::RelationReader.relation_readers(nil)
-    ROM::Repository::RelationReader.relation_cache(Concurrent::Hash.new)
   end
 
   Dir[SPEC_ROOT.join('support/*.rb').to_s].each do |f|