chore(msg): remove unused VehicleAngularAccelerationSetpoint.msg

msg/CMakeLists.txt

@@ -234,7 +234,6 @@ set(msg_files
 	UlogStreamAck.msg
 	VehicleAcceleration.msg
 	VehicleAirData.msg
-	VehicleAngularAccelerationSetpoint.msg
 	VehicleConstraints.msg
 	VehicleImu.msg
 	VehicleImuStatus.msg

msg/VehicleAngularAccelerationSetpoint.msg

@@ -1,5 +0,0 @@
-
-uint64 timestamp         # time since system start (microseconds)
-uint64 timestamp_sample  # timestamp of the data sample on which this message is based (microseconds)
-
-float32[3] xyz           # angular acceleration about X, Y, Z body axis in rad/s^2