[css-conditional-5] Import <font-format> and <font-tech> from CSS Fonts (#8111)

Co-authored-by: Chris Lilley <chris@w3.org>

Author: cdoublev

css-conditional-5/Overview.bs

@@ -74,37 +74,21 @@ Extensions to the ''@supports'' rule</h2>
 		<dfn>&lt;supports-feature></dfn> = <<supports-selector-fn>> | <<supports-font-tech-fn>>
 		                    | <<supports-font-format-fn>> | <<supports-decl>>
 		<dfn>&lt;supports-font-tech-fn></dfn> = font-tech( <<font-tech>> )
-		<dfn>&lt;font-tech></dfn> = [ features-opentype | features-aat | features-graphite
-		                    | color-colrv0 | color-colrv1 | color-svg | color-sbix | color-cbdt
-		                    | variations | palettes | incremental ]
 		<dfn>&lt;supports-font-format-fn></dfn> = font-format( <<font-format>> )
-		<dfn>&lt;font-format></dfn> = [ collection | embedded-opentype | opentype
-		                    | svg | truetype | woff | woff2 ]
 	</pre>
 
-	ISSUE: <<font-format>> and <<font-tech>> should be imported from css-fonts-4, not defined here.
-
-
 	: <<supports-font-tech-fn>>
 	::
 		The result is true if the UA
 		<a href="#dfn-support-font-tech">supports the font tech</a>
 		provided as an argument to the function.
 
-		Note: The allowed values for the ''font-tech()'' function
-		are the same as those for the ''tech()'' function
-		in the '@font-face' '@font-face/src' descriptor.
-
 	: <<supports-font-format-fn>>
 	::
 		The result is true if the UA
 		<a href="#dfn-support-font-format">supports the font format</a>
 		provided as an argument to the function.
 
-		Note: The allowed values for the ''font-format()'' function
-		are the same as those for the ''format()'' function
-		in the '@font-face' '@font-face/src' descriptor.
-
 <h3 id="support-definition-ext">
 Extensions to the definition of support</h3>
 
@@ -116,7 +100,8 @@ Extensions to the definition of support</h3>
 	A CSS processor is considered to
 	<dfn export for=CSS id="dfn-support-font-format">support a font format</dfn>
 	when it is capable of utilising the specified [[css-fonts-4#font-format-definitions]]
-	in layout and rendering.
+	in layout and rendering,
+	and this format is not specified as a <<string>>.
 
 <h2 id="when-rule">
 Generalized Conditional Rules: the ''@when'' rule</h2>