Revert "Reapply "[Clang] Implement resolution for CWG1835 (#92957)" (#98547)"

This reverts commit ce4aada6e2135e29839f672a6599db628b53295d and a
follow-up patch 8ef26f1289bf069ccc0d6383f2f4c0116a1206c1.

This new warning can not be fully suppressed by the
`-Wno-missing-dependent-template-keyword` flag, this gives developer no
time to do the cleanup in a large codebase, see llvm/llvm-project#98547 (comment)

NOKEYCHECK=True
GitOrigin-RevId: 59e56eeb1d9c0d25a522ae09f501a350981a31de

Author: hokein

include/regex

@@ -4214,7 +4214,7 @@ public:
   _LIBCPP_HIDE_FROM_ABI int compare(const value_type* __s) const { return str().compare(__s); }
 
   _LIBCPP_HIDE_FROM_ABI void swap(sub_match& __s) _NOEXCEPT_(__is_nothrow_swappable_v<_BidirectionalIterator>) {
-    this->template pair<_BidirectionalIterator, _BidirectionalIterator>::swap(__s);
+    this->pair<_BidirectionalIterator, _BidirectionalIterator>::swap(__s);
     std::swap(matched, __s.matched);
   }
 };