Reverted a change, removed empty test.

src/objective-c/tests/InteropTestsLocalCleartext.m

@@ -49,7 +49,7 @@ static NSString * const kLocalCleartextHost = @"localhost:5050";
 
 - (void)setUp {
   // Register test server as non-SSL.
-  [GRPCCall useInsecureConnectionsForHost:nil];
+  [GRPCCall useInsecureConnectionsForHost:kLocalCleartextHost];
 
   [super setUp];
 }

src/objective-c/tests/RxLibraryUnitTests.m

@@ -157,7 +157,4 @@
   XCTAssertEqualObjects(handler.errorOrNil, nil);
 }
 
-- (void)testBufferedPipeSetState {
-}
-
 @end