Remove broken sendMessage tests (#209)
Remove broken sendMessage tests (#209)

These cause the tests to not finish and spin at 100% CPU forever
jacobmarshall-etc/bugsnag-js,jacobmarshall-etc/bugsnag-js,Omniroot/bugsnag-js,jacobmarshall/bugsnag-js,Omniroot/bugsnag-js,jacobmarshall/bugsnag-js