lpe: remove usage of euler angles from attitude topic

Signed-off-by: Roman <bapstroman@gmail.com>

src/modules/local_position_estimator/sensors/flow.cpp

@@ -43,7 +43,7 @@ void BlockLocalPositionEstimator::flowDeinit()
 int BlockLocalPositionEstimator::flowMeasure(Vector<float, n_y_flow> &y)
 {
 	// check for sane pitch/roll
-	if (_sub_att.get().roll > 0.5f || _sub_att.get().pitch > 0.5f) {
+	if (_eul(0) > 0.5f || _eul(1) > 0.5f) {
 		return -1;
 	}