Remove unused sensors

ROMFS/tap_common/init.d/rc.sensors

@@ -16,10 +16,6 @@ if hmc5883 -C -T -X start
 then
 fi
 
-if lis3mdl -R 2 start
-then
-fi
-
 # Internal SPI bus is rotated 90 deg yaw
 if hmc5883 -C -T -S -R 2 start
 then
@@ -30,19 +26,10 @@ if mpu6000 -I -T 6000 start
 then
 fi
 
-# Internal SPI bus mpu9250 is rotated 90 deg yaw
-if mpu9250 -R 2 start
-then
-fi
-
 if meas_airspeed start
 then
 fi
 
-if sf1xx start
-then
-fi
-
 # Wait 20 ms for sensors (because we need to wait for the HRT and work queue callbacks to fire)
 usleep 20000
 if sensors start