Remove obsolete HTML elements from CSS syntax highlight

* acronym
* big
* strike
* tt
* frame
* frameset
* noframes

extensions/css/syntaxes/css.plist

@@ -708,7 +708,7 @@
 			<array>
 				<dict>
 					<key>match</key>
-					<string>\b(a|abbr|acronym|address|area|article|aside|audio|b|base|big|blockquote|body|br|button|canvas|caption|cite|code|col|colgroup|datalist|dd|del|details|dfn|dialog|div|dl|dt|em|eventsource|fieldset|figure|figcaption|footer|form|frame|frameset|(h[1-6])|head|header|hgroup|hr|html|i|iframe|img|input|ins|kbd|label|legend|li|link|map|mark|menu|meta|meter|nav|noframes|noscript|object|ol|optgroup|option|output|p|param|pre|progress|q|samp|script|section|select|small|span|strike|strong|style|sub|summary|sup|table|tbody|td|textarea|tfoot|th|thead|time|title|tr|tt|ul|var|video)\b</string>
+					<string>\b(a|abbr|address|area|article|aside|audio|b|base|blockquote|body|br|button|canvas|caption|cite|code|col|colgroup|datalist|dd|del|details|dfn|dialog|div|dl|dt|em|eventsource|fieldset|figure|figcaption|footer|form|(h[1-6])|head|header|hgroup|hr|html|i|iframe|img|input|ins|kbd|label|legend|li|link|map|mark|menu|meta|meter|nav|noscript|object|ol|optgroup|option|output|p|param|pre|progress|q|samp|script|section|select|small|span|strong|style|sub|summary|sup|table|tbody|td|textarea|tfoot|th|thead|time|title|tr|ul|var|video)\b</string>
 					<key>name</key>
 					<string>entity.name.tag.css</string>
 				</dict>