Core: Remove ifdef for call to GCAdapter::ResetRumble

The ifdef made it so this was never called on Android, but we do want it
to be called on Android.

There are ifdefs inside the function implementation but not around the
function declaration or definition, so there's no need for ifdefs when
calling it.

Source/Core/Core/Core.cpp

@@ -252,9 +252,7 @@ bool Init(Core::System& system, std::unique_ptr<BootParameters> boot, const Wind
 
 static void ResetRumble()
 {
-#if defined(__LIBUSB__)
   GCAdapter::ResetRumble();
-#endif
   if (!Pad::IsInitialized())
     return;
   for (int i = 0; i < 4; ++i)