Remove archived -moz CSS features

[wbamberg]

As part of mdn/sprints#3491 I have archived pages for some -moz prefixed CSS features:

properties:

-moz-window-shadow
-moz-text-blink
-moz-stack-sizing
-moz-border-top-colors
-moz-border-right-colors
-moz-border-left-colors
-moz-border-bottom-colors

selectors:

:-moz-full-screen-ancestor
:-moz-system-metric + subpages

media features:

-moz-mac-graphite-theme
-moz-maemo-classic
-moz-os-version
-moz-scrollbar-end-backward
-moz-scrollbar-end-forward
-moz-scrollbar-start-backward
-moz-scrollbar-start-forward
-moz-scrollbar-thumb-proportional
-moz-touch-enabled
-moz-windows-accent-color-in-titlebar
-moz-windows-classic
-moz-windows-compositor
-moz-windows-default-theme
-moz-windows-glass
-moz-windows-theme

These are all features that have not been available to Web pages since at least Firefox 60. Some of them don't have BCD, but this PR removes BCD for those that do:

-moz-window-shadow
-moz-text-blink
-moz-border-top-colors
-moz-border-right-colors
-moz-border-left-colors
-moz-border-bottom-colors
:-moz-full-screen-ancestor
:-moz-system-metric + subfeatures

[ddbeck]

This checks out. Thank you! 🎉

[Elchi3]

I was about to request changes, but you can do this work still (or maybe you planned to that afterwards anyways):

The following pages still need the compat table replaced with a sentence describing the historical support.

• https://developer.mozilla.org/en-US/docs/Archive/Web/CSS/:-moz-system-metric (and all sub pages)
• https://developer.mozilla.org/en-US/docs/Archive/Web/CSS/:-moz-full-screen-ancestor
• https://developer.mozilla.org/en-US/docs/Archive/Web/CSS/-moz-window-shadow
• https://developer.mozilla.org/en-US/docs/Archive/Web/CSS/-moz-text-blink
• https://developer.mozilla.org/en-US/docs/Archive/Web/CSS/-moz-border-top-colors
• https://developer.mozilla.org/en-US/docs/Archive/Web/CSS/-moz-border-right-colors
• https://developer.mozilla.org/en-US/docs/Archive/Web/CSS/-moz-border-left-colors
• https://developer.mozilla.org/en-US/docs/Archive/Web/CSS/-moz-border-bottom-colors

[ddbeck]

I was about to request changes

Ack, sorry for getting ahead of you on that. If you want to leave a review anyway, I can take responsibility for getting the fixes in.

[Elchi3]

No worries, the review is more for the content on the MDN side and we can remove the compat tables there at any time (but we should make sure we do that, because after today's release, the calls to these data points become dead)