Remove outdated test of FirefoxOS workaround
Remove outdated test of FirefoxOS workaround

Issue #201 and the related fix worked around a FirefoxOS implementation
bug, where the key 'radio' was used instead of 'radioType'. Over the
years, the test was altered and the API code changed, so now the field
is ignored and the test covers the same code as other tests.

mozilla/ichnaea,mozilla/ichnaea,mozilla/ichnaea,mozilla/ichnaea