tune_control: Remove the tune defines

msg/tune_control.msg

 # This message is used to control the tunes, when the tune_id is set to CUSTOM
 # then the frequency, duration are used otherwise those values are ignored.
 
-# definition of the different tune_id
-uint8 TUNE_ID_CUSTOM = 0
-uint8 TUNE_ID_STARTUP = 1
-uint8 TUNE_ID_ERROR = 2
-uint8 TUNE_ID_NOTIFY_POSITIVE = 3
-uint8 TUNE_ID_NOTIFY_NEUTRAL = 4
-uint8 TUNE_ID_NOTIFY_NEGATIVE = 5
-uint8 TUNE_ID_ARMING_WARNING = 6
-uint8 TUNE_ID_BATTERY_WARNING_SLOW = 7
-uint8 TUNE_ID_BATTERY_WARNING_FAST = 8
-uint8 TUNE_ID_GPS_WARNING = 9
-uint8 TUNE_ID_ARMING_FAILURE = 10
-uint8 TUNE_ID_PARACHUTE_RELEASE = 11
-uint8 TUNE_ID_EKF_WARNING = 12
-uint8 TUNE_ID_BARO_WARNING = 13
-uint8 TUNE_ID_SINGLE_BEEP = 14
-uint8 TUNE_ID_HOME_SET = 15
-
 uint8 tune_id
 uint8 tune_override  # if set to 1 the tune which is playing will be stopped and the new started
 uint16 frequency     # in Hz