Remove concurrent map require

mensfeld · web-flow · commit e57826234ee4 · 2022-11-21T18:55:27.000+01:00
diff --git a/activesupport/lib/active_support/testing/time_helpers.rb b/activesupport/lib/active_support/testing/time_helpers.rb
@@ -2,7 +2,6 @@
 
 require "active_support/core_ext/module/redefine_method"
 require "active_support/core_ext/time/calculations"
-require "concurrent/map"
 
 module ActiveSupport
   module Testing
