[func.wrap.copy.class] Remove statement about unused /call-args/ added in P2548R6.

Author: burblebee

source/utilities.tex

@@ -13618,8 +13618,6 @@
 that generalize the notion of a callable object\iref{func.def}.
 These wrappers can store, copy, move, and call arbitrary callable objects,
 given a call signature.
-Within this subclause, \exposid{call-args} is an argument pack
-with elements that have types \tcode{ArgTypes\&\&...} respectively.
 
 \pnum
 \recommended