Revert "make sure write_timeout and local_infile ivars are setup to avoid warnings"

This reverts commit e7e43411c5fd3191605b0dfb4d0dfb97c1466561.
Merge pull request #401 from simi/revert_warning

Revert "make sure write_timeout and local_infile ivars are setup to avoid warnings.
just skip these tests on rbx :\