test/ruby/test_signal.rb: speedup some test by disabling RubyGems
test_signame_delivered is reduced from 1.0s to 0.1s
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63831 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test/ruby/test_signal.rb: speedup some test by disabling RubyGems
test_signame_delivered is reduced from 1.0s to 0.1s
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63831 b2dd03c8-39d4-4d8f-98ff-823fe69b080e