Drop the V1 plugin API compatibility code

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

src/Kaleidoscope/AlphaSquare-Effect.cpp

@@ -68,20 +68,6 @@ EventHandlerResult AlphaSquareEffect::onKeyswitchEvent(Key &mappedKey, byte row,
   return EventHandlerResult::OK;
 }
 
-// Legacy V1 API
-#if KALEIDOSCOPE_ENABLE_V1_PLUGIN_API
-void AlphaSquareEffect::setup(void) {
-  Kaleidoscope.useEventHandlerHook(legacyEventHandler);
-}
-
-Key AlphaSquareEffect::legacyEventHandler(Key mapped_key, byte row, byte col, uint8_t key_state) {
-  EventHandlerResult r = ::AlphaSquareEffect.onKeyswitchEvent(mapped_key, row, col, key_state);
-  if (r == EventHandlerResult::OK)
-    return mapped_key;
-  return Key_NoKey;
-}
-#endif
-
 }
 
 kaleidoscope::AlphaSquareEffect AlphaSquareEffect;

src/Kaleidoscope/AlphaSquare-Effect.h

@@ -30,22 +30,9 @@ class AlphaSquareEffect : public LEDMode {
 
   EventHandlerResult onKeyswitchEvent(Key &mappedKey, byte row, byte col, uint8_t keyState);
 
-#if KALEIDOSCOPE_ENABLE_V1_PLUGIN_API
-  kaleidoscope::EventHandlerResult onSetup() {
-    ::LEDControl.mode_add(this);
-
-    return kaleidoscope::EventHandlerResult::OK;
-  }
-#endif
-
  protected:
   void update(void) final;
 
-#if KALEIDOSCOPE_ENABLE_V1_PLUGIN_API
-  void setup(void) final;
-  static Key legacyEventHandler(Key mapped_key, byte row, byte col, uint8_t key_state);
-#endif
-
  private:
   static uint32_t end_time_left_, end_time_right_;
   static Key last_key_left_, last_key_right_;