Remove incorrect version for `font-variation-settings` (#15332)
Remove incorrect version for `font-variation-settings` (#15332)

* Remove incorrect version for `font-variation-settings`

In Chromium browsers, `font-variation-settings` is supported as a normal CSS property, but not within \@font-face at the moment.

See https://bugs.chromium.org/p/chromium/issues/detail?id=443467.

* Remove reported Opera support

* Fix "false" -> false values for Opera
mdn/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data