Bug 973344, part 1 - Remove workaround introduced by bug 947718 now that bug 946184 is fixed, especially since it causes crashes with the dom.forms.number pref disabled. r=ehsan, a=lsblakk
Bug 973344, part 2 for beta only - Disable the input[type=number] forms.css rule (the pref is off) and the tests that break as a result. r=heycam, a=lsblakk