Copter: suggested clean up items

Co-authored-by: Peter Hall <33176108+IamPete1@users.noreply.github.com>

ArduCopter/land_detector.cpp

@@ -269,4 +269,4 @@ bool Copter::get_force_flying() const
     }
 #endif
     return force_flying;
-}
+}

ArduCopter/mode_stabilize_heli.cpp

@@ -77,7 +77,7 @@ void ModeStabilize_Heli::run()
     // call attitude controller
     attitude_control->input_euler_angle_roll_pitch_euler_rate_yaw(target_roll, target_pitch, target_yaw_rate);
 
-    // output pilot's throttle - note that TradHeli does not used angle-boost
+    // output pilot's throttle
     attitude_control->set_throttle_out(pilot_throttle_scaled, true, g.throttle_filt);
 }