Drop the V1 plugin API compatibility code

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

src/Kaleidoscope/ShapeShifter.cpp

@@ -60,27 +60,6 @@ EventHandlerResult ShapeShifter::onKeyswitchEvent(Key &mapped_key, byte row, byt
   return EventHandlerResult::OK;
 }
 
-// Legacy V1 API
-#if KALEIDOSCOPE_ENABLE_V1_PLUGIN_API
-void ShapeShifter::begin() {
-  Kaleidoscope.useEventHandlerHook(legacyEventHandler);
-  Kaleidoscope.useLoopHook(legacyLoopHook);
-}
-
-Key ShapeShifter::legacyEventHandler(Key mapped_key, byte row, byte col, uint8_t key_state) {
-  EventHandlerResult r = ::ShapeShifter.onKeyswitchEvent(mapped_key, row, col, key_state);
-  if (r == EventHandlerResult::OK)
-    return mapped_key;
-  return Key_NoKey;
-}
-
-void ShapeShifter::legacyLoopHook(bool is_post_clear) {
-  if (is_post_clear)
-    return;
-  ::ShapeShifter.beforeReportingState();
-}
-#endif
-
 }
 
 kaleidoscope::ShapeShifter ShapeShifter;

src/Kaleidoscope/ShapeShifter.h

@@ -35,17 +35,6 @@ class ShapeShifter : public KaleidoscopePlugin {
   EventHandlerResult onKeyswitchEvent(Key &mapped_key, byte row, byte col, uint8_t key_state);
   EventHandlerResult beforeReportingState();
 
-#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);
-  static void legacyLoopHook(bool is_post_clear);
-#endif
-
  private:
   static bool mod_active_;
 };