Remove unneeded `const_defined?(:Time)` in `mruby-io` test
`mruby-time` is included in test dependencies.
MODIFY
mrbgems/mruby-io/test/file.rb
mrbgems/mruby-io/test/file.rb
@@ -69,9 +69,6 @@ assert('File#flock') do
end
assert('File#mtime') do
- unless Object.const_defined?(:Time)
- skip "File#mtime require Time"
- end
begin
File.open("#{$mrbtest_io_wfname}.mtime", 'w') do |f|
assert_equal Time, f.mtime.class

Remove unneeded `const_defined?(:Time)` in `mruby-io` test

`mruby-time` is included in test dependencies.