Drop the V1 plugin API compatibility code

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

src/Kaleidoscope/EEPROM-Settings.cpp

@@ -98,13 +98,6 @@ void EEPROMSettings::version(uint8_t ver) {
   update();
 }
 
-// Legacy V1 API
-#if KALEIDOSCOPE_ENABLE_V1_PLUGIN_API
-void EEPROMSettings::begin() {
-  ::EEPROMSettings.onSetup();
-}
-#endif
-
 }
 
 kaleidoscope::EEPROMSettings EEPROMSettings;

src/Kaleidoscope/EEPROM-Settings.h

@@ -39,11 +39,6 @@ class EEPROMSettings : public kaleidoscope::Plugin {
   static uint16_t crc(void);
   static uint16_t used(void);
 
-#if KALEIDOSCOPE_ENABLE_V1_PLUGIN_API
- protected:
-  void begin();
-#endif
-
  private:
   static uint16_t next_start_;
   static bool is_valid_;