rubocop: Denote unused method arguments

.rubocop_todo.yml

@@ -6,14 +6,6 @@
 # Note that changes in the inspected code, or installation of new
 # versions of RuboCop, may require this file to be generated again.
 
-# Offense count: 2
-# Cop supports --auto-correct.
-# Configuration parameters: AllowUnusedKeywordArguments, IgnoreEmptyMethods.
-Lint/UnusedMethodArgument:
-  Exclude:
-    - '_plugins/liquid-die.rb'
-    - '_plugins/liquid-warn.rb'
-
 # Offense count: 5
 Lint/UselessAssignment:
   Exclude:

_plugins/liquid-die.rb

@@ -18,7 +18,7 @@ module Jekyll
       @error = text
     end
 
-    def render(context)
+    def render(_context)
       ## Produces: Liquid die tag called. [<Error.>] -- Error creating output [in <output file name>]
       abort("Liquid die tag called. " + @error + " -- Error creating output")
     end

_plugins/liquid-warn.rb

@@ -18,7 +18,7 @@ module Jekyll
       @warning = text
     end
 
-    def render(context)
+    def render(_context)
       ## Use "notice" instead of "warning" because we use grep to
       ## treat some Jekyll warnings as errors
       print "Notice: " + @warning + "\n"