Remove the last FIXMEs on -Wunused-comparison since it got moved to
entirely use the existing -Wunused-value infrastructure. This also fixes
a few missed cases for -Wunused in general.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@137916 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Parser/switch-recovery.cpp b/test/Parser/switch-recovery.cpp
index a1df426..84ac0c8 100644
--- a/test/Parser/switch-recovery.cpp
+++ b/test/Parser/switch-recovery.cpp
@@ -79,7 +79,7 @@
     case false ? 1 : 2:
     true ? 1 : 2:  // expected-error {{expected 'case' keyword before expression}}
     case 10:
-      14 ? 3 : 4;
+      14 ? 3 : 4;  // expected-warning {{expression result unused}}
     default:
       return 1;
   }