Remove CPU::boot()

bsnes/sfc/cpu/cpu.cpp

@@ -33,9 +33,6 @@ auto CPU::Enter() -> void {
   }
 }
 
-auto CPU::boot() -> void {
-}
-
 auto CPU::main() -> void {
   if(r.wai) return instructionWait();
   if(r.stp) return instructionStop();

bsnes/sfc/cpu/cpu.hpp

@@ -9,7 +9,6 @@ struct CPU : Processor::WDC65816, Thread, PPUcounter {
   auto synchronizePPU() -> void;
   auto synchronizeCoprocessors() -> void;
   static auto Enter() -> void;
-  auto boot() -> void;
   auto main() -> void;
   auto load() -> bool;
   auto power(bool reset) -> void;