Drop the V1 plugin API compatibility code

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

src/Kaleidoscope/TopsyTurvy.cpp

@@ -78,21 +78,6 @@ EventHandlerResult TopsyTurvy::onKeyswitchEvent(Key &mapped_key, byte row, byte
   return EventHandlerResult::EVENT_CONSUMED;
 }
 
-// Legacy V1 API
-
-#if KALEIDOSCOPE_ENABLE_V1_PLUGIN_API
-void TopsyTurvy::begin() {
-  Kaleidoscope.useEventHandlerHook(legacyEventHandler);
-}
-
-Key TopsyTurvy::legacyEventHandler(Key mapped_key, byte row, byte col, uint8_t key_state) {
-  EventHandlerResult r = ::TopsyTurvy.onKeyswitchEvent(mapped_key, row, col, key_state);
-  if (r == EventHandlerResult::OK)
-    return mapped_key;
-  return Key_NoKey;
-}
-#endif
-
 }
 
 kaleidoscope::TopsyTurvy TopsyTurvy;

src/Kaleidoscope/TopsyTurvy.h

@@ -31,16 +31,6 @@ class TopsyTurvy: public KaleidoscopePlugin {
 
   EventHandlerResult onKeyswitchEvent(Key &mapped_key, byte row, byte col, uint8_t key_state);
 
-#if KALEIDOSCOPE_ENABLE_V1_PLUGIN_API
-  kaleidoscope::EventHandlerResult onSetup() {
-    return kaleidoscope::EventHandlerResult::OK;
-  }
-
- protected:
-  void begin();
-  static Key legacyEventHandler(Key mapped_key, byte row, byte col, uint8_t key_state);
-#endif
-
  private:
   static uint8_t mod_state_;
   static uint8_t last_pressed_position_;