Revert "fixes OpenBEL/openbel-api#121"
Revert "fixes OpenBEL/openbel-api#121"

This reverts commit 57ac4ad073e7f4aaf39af91ff4597aae93851125.

nbargnesi/bel-parser,OpenBEL/bel_parser,OpenBEL/bel_parser,nbargnesi/bel-parser,OpenBEL/bel_parser,nbargnesi/bel-parser