Removed breakpoint caching in GDB server - it's not needed!

GDB can be configured to avoid needlessly updating breakpoints on the target

src/DebugServer/Gdb/GdbRspDebugServer.hpp

@@ -197,10 +197,5 @@ namespace Bloom::DebugServer::Gdb
          * a "stop reply" packet to the client once the target execution stops.
          */
         void onTargetExecutionStopped(const Events::TargetExecutionStopped&);
-
-        /**
-         * Actions any pending breakpoint removals.
-         */
-        void flushBreakpointRemovals();
     };
 }