[css-syntax-3] Remove duplicate token stream creations (#11129)

Author: cdoublev

css-syntax-3/Overview.bs

@@ -2161,9 +2161,7 @@ Parser Entry Points</h3>
 		3. If |input| is a [=string=],
 			then [=filter code points=] from |input|,
 			[=tokenize=] the result,
-			then create a new [=token stream=]
-			with those tokens as its [=token stream/tokens=],
-			and return it.
+			and return the stream of tokens.
 
 		4. Assert: Only the preceding types should be passed as |input|.
 	</div>
@@ -3189,9 +3187,8 @@ Consume a '@font-face/unicode-range' value</h4>
 
 	1. Let |tokens| be the result of [=CSS/tokenizing=] |input string|
 		with |unicode ranges allowed| set to true.
-		Let |input| be a new [=token stream=] from |tokens|.
 
-	2. [=Consume a list of component values=] from |input|,
+	2. [=Consume a list of component values=] from |tokens|,
 		and return the result.
 
 	Note: The existence of this algorithm