1 files changed, 0 insertions, 3 deletions
diff --git a/tool/lib/vcs.rb b/tool/lib/vcs.rb
index 3553ed51a9..fcee91a7a4 100644
--- a/tool/lib/vcs.rb
+++ b/tool/lib/vcs.rb
@@ -117,9 +117,6 @@ else
       ret
     end
   end
-  module Kernel
-    prepend(DebugSystem)
-  end
 end
 
 class VCS