TBS Caipirinha: Prevent ESC beeping all the time

Setting PWM_DISARMED to 0 results in no PWM output to the ESC for the pusher motor.
Most ESCs start beeping endless in short intervals if they don't get a signal.
I remove changing this parameter which is 900 by default to always command the motor to stand still.

ROMFS/px4fmu_common/init.d/airframes/3100_tbs_caipirinha

@@ -50,7 +50,6 @@ then
 
 	param set PWM_MAIN_REV1 1
 	param set PWM_MAIN_REV2 1
-	param set PWM_DISARMED 0
 	param set PWM_MIN 900
 	param set PWM_MAX 2100
 fi