Fixed test case to not expect a warning when one should not be emitted.

Removed redundant test case.

llvm-svn: 44426

clang/test/Sema/floating-point-compare.c

@@ -13,17 +13,13 @@ int f3(float x) {
 }
 
 int f4(float x) {
-	return x == 0.0; // expected-warning {{comparing}}
+	return x == 0.0; // no-warning {{comparing}}
 }
 
 int f5(float x) {
 	return x == __builtin_inf(); // no-warning
 }
 
-int f6(float x) {
-  return x == 0.0; // no-warning
-}
-
 int f7(float x) {
   return x == 3.14159; // expected-warning {{comparing}}
 }