fix(test): remove call to non-existent check_version(); clobber node_modules
fix(test): remove call to non-existent check_version(); clobber node_modules

shane-tomlinson/fxa-content-server,shane-tomlinson/fxa-content-server,shane-tomlinson/fxa-content-server,mozilla/fxa-content-server,mozilla/fxa-content-server,mozilla/fxa-content-server