Merge pull request #40797 from etcwilde/ewilde/clean-csapply-warning

[NFC] Removing unused ctx variable

Author: etcwilde

lib/Sema/CSApply.cpp

@@ -8035,7 +8035,6 @@ namespace {
         // Note that in this mode `ClosuresToTypeCheck` acts
         // as a stack because multi-statement closures could
         // have other multi-statement closures in the body.
-        auto &ctx = closure->getASTContext();
         if (cs.participatesInInference(closure)) {
           hadError |= cs.applySolutionToBody(
               solution, closure, Rewriter.dc,