Drop the V1 plugin API compatibility code

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

src/kaleidoscope/CycleTimeReport.cpp

@@ -51,20 +51,6 @@ EventHandlerResult CycleTimeReport::afterEachCycle() {
   return EventHandlerResult::OK;
 }
 
-// Deprecated V1 APIs
-#if KALEIDOSCOPE_ENABLE_V1_PLUGIN_API
-void CycleTimeReport::begin() {
-  Kaleidoscope.useLoopHook(legacyLoopHook);
-}
-
-void CycleTimeReport::legacyLoopHook(bool is_post_clear) {
-  if (is_post_clear)
-    ::CycleTimeReport.afterEachCycle();
-  else
-    ::CycleTimeReport.beforeEachCycle();
-}
-#endif
-
 }
 
 __attribute__((weak)) void cycleTimeReport(void) {

src/kaleidoscope/CycleTimeReport.h

@@ -31,12 +31,6 @@ class CycleTimeReport : public kaleidoscope::Plugin {
 
   static uint32_t average_loop_time;
 
-#if KALEIDOSCOPE_ENABLE_V1_PLUGIN_API
- protected:
-  void begin();
-  static void legacyLoopHook(bool is_post_clear);
-#endif
-
  private:
   static uint32_t next_report_time_;
   static uint32_t loop_start_time_;