EXT_float_blend not behind a pref on Firefox (#4105)
EXT_float_blend not behind a pref on Firefox (#4105)

The 67 update actually removes the pref that this used to hide
behind, so I've removed that from the data.

Source: https://bugzilla.mozilla.org/show_bug.cgi?id=1535808
chrisdavidmills/browser-compat-data,mdn/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data