ROMFS: advanced_plane config: remove deprecated settings

Signed-off-by: Silvan Fuhrer <silvan@auterion.com>

ROMFS/px4fmu_common/init.d-posix/airframes/1039_gazebo-classic_advanced_plane

@@ -8,7 +8,6 @@
 
 
 param set-default FW_LND_ANG 8
-param set-default FW_THR_LND_MAX 0
 
 param set-default NPFG_PERIOD 12
 
@@ -36,7 +35,6 @@ param set-default NAV_DLL_ACT 2
 
 param set-default RWTO_TKOFF 1
 
-#param set-default SYS_CTRL_ALLOC 1
 param set-default CA_AIRFRAME 1
 
 param set-default CA_ROTOR_COUNT 1
@@ -61,7 +59,3 @@ param set-default PWM_MAIN_FUNC7 202
 param set-default PWM_MAIN_FUNC8 203
 param set-default PWM_MAIN_FUNC9 206
 param set-default PWM_MAIN_REV 256
-
-
-set MIXER_FILE etc/mixers-sitl/plane_sitl.main.mix
-set MIXER custom