Create an operation does not care about [LegacyLenientThis]

Only getters and setters pay attention to it.

Author: annevk

index.bs

@@ -12528,8 +12528,7 @@ in which case they are exposed on every object that [=implements=] the interface
                     <emu-val>null</emu-val> or <emu-val>undefined</emu-val>, or |realm|'s
                     [=realm/global object=] otherwise.
                     (This will subsequently cause a {{TypeError}} in a few steps, if
-                    the global object does not implement |target| and [{{LegacyLenientThis}}] is not
-                    specified.)
+                    the global object does not implement |target|.)
                     <!-- https://www.w3.org/Bugs/Public/show_bug.cgi?id=18547#c9 -->
                 1.  If |jsValue| [=is a platform object=], then [=perform a security check=],
                     passing |jsValue|, |id|, and "method".