Airspeed Selector: repurpose wind estimator into an airspeed (selection, validation) module.

This new airspeed module does:
  -runns an airspeed validator for every airspeed sensor present, which checks measurement validity and estimates an airspeed scale
  -selects another airspeed sensor if for the current one a failure is detected
  -estimates airspeed with groundspeed-windspeed if no valid airspeed sensor is present
  -outputs airspeed_validated topic

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

ROMFS/px4fmu_common/init.d-posix/rcS

@@ -164,7 +164,6 @@ then
 
 	param set TRIG_INTERFACE 3
 
-	param set WEST_EN 0
 fi
 
 # Adapt timeout parameters if simulation runs faster or slower than realtime.
@@ -213,10 +212,6 @@ sensors start
 commander start
 navigator start
 
-if param compare WEST_EN 1
-then
-	wind_estimator start
-fi
 
 if ! param compare MNT_MODE_IN -1
 then