[ruby/irb] Remove unused error

https://github.com/ruby/irb/commit/f09a1874b6

2 files changed, 0 insertions, 10 deletions

diff --git a/lib/irb/lc/error.rb b/lib/irb/lc/error.rb
index b8a7fe5a0e..cb5c21cdb4 100644
--- a/lib/irb/lc/error.rb
+++ b/lib/irb/lc/error.rb
@@ -48,11 +48,6 @@ module IRB
       super("No such job(#{val}).")
     end
   end
-  class CantShiftToMultiIrbMode < StandardError
-    def initialize
-      super("Can't shift to multi irb mode.")
-    end
-  end
   class CantChangeBinding < StandardError
     def initialize(val)
       super("Can't change binding to (#{val}).")
diff --git a/lib/irb/lc/ja/error.rb b/lib/irb/lc/ja/error.rb
index d7c181c02e..5e3622cbae 100644
--- a/lib/irb/lc/ja/error.rb
+++ b/lib/irb/lc/ja/error.rb
@@ -48,11 +48,6 @@ module IRB
       super("そのようなジョブ(#{val})はありません.")
     end
   end
-  class CantShiftToMultiIrbMode < StandardError
-    def initialize
-      super("multi-irb modeに移れません.")
-    end
-  end
   class CantChangeBinding < StandardError
     def initialize(val)
       super("バインディング(#{val})に変更できません.")