.gitignore in sidekiq-6.0.0.pre1 vs .gitignore in sidekiq-6.0.0

@@ -1,9 +1,7 @@
 .rvmrc
 .ruby-version
 tags
-Gemfile.lock
-gemfiles/*.lock
 *.swp
 dump.rdb
 .rbx
 coverage/
 vendor/