Remove unused diagnostic. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@251432 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/clang/Basic/DiagnosticSemaKinds.td b/include/clang/Basic/DiagnosticSemaKinds.td
index 6e90942cc422812f96c433e84f8143979156f8b8..1fdd7bc1b92bb925fa807ccb57b33067abf6e677 100644 (file)
--- a/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/include/clang/Basic/DiagnosticSemaKinds.td
@@ -7858,9 +7858,6 @@ def ext_coroutine_without_co_await_co_yield : ExtWarn<
   "'co_return' used in a function "
   "that uses neither 'co_await' nor 'co_yield'">,
   InGroup<DiagGroup<"coreturn-without-coawait">>;
-def err_co_await_no_viable_function : Error<
-  "invalid co_await operand of type %0; "
-  "no viable '%1' function %select{|for awaited type %3 }2available">;
 def err_implied_std_coroutine_traits_not_found : Error<
   "you need to include <coroutine> before defining a coroutine">;
 def err_malformed_std_coroutine_traits : Error<