[mediaqueries-4] Remove trailing mention for speech as not deprecated. Fix #6029

Author: svgeesus

mediaqueries-4/Overview.bs

@@ -2378,7 +2378,7 @@ The following changes were made to this specification since the
 		(They'll trigger a syntax error instead.)
 
 	<li>
-		All media types except for ''screen'', ''print'', ''speech'', and ''all'' are deprecated.
+		All media types except for ''screen'', ''print'', and ''all'' are deprecated.
 
 	<li>
 		Deprecated '@media/device-width', '@media/device-height', '@media/device-aspect-ratio',