service/hid: Remove unused system reference

src/core/hle/service/hid/controllers/gesture.cpp

@@ -11,7 +11,7 @@ namespace Service::HID {
 constexpr std::size_t SHARED_MEMORY_OFFSET = 0x3BA00;
 
 Controller_Gesture::Controller_Gesture(Core::System& system)
-    : ControllerBase(system), system(system) {}
+    : ControllerBase(system) {}
 Controller_Gesture::~Controller_Gesture() = default;
 
 void Controller_Gesture::OnInit() {}

src/core/hle/service/hid/controllers/gesture.h

@@ -59,6 +59,5 @@ private:
         std::array<GestureState, 17> gesture_states;
     };
     SharedMemory shared_memory{};
-    Core::System& system;
 };
 } // namespace Service::HID