* test/date/test_date_strptime.rb: remove useless variable.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46444 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/date/test_date_arith.rb: remove unused block argument.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46445 b2dd03c8-39d4-4d8f-98ff-823fe69b080e