Remove uninformative comments

EKF/optflow_fusion.cpp

@@ -475,13 +475,10 @@ void Ekf::fuseOptFlow()
 
 		for (int i = 0; i < _k_num_states; i++) {
 			if (P(i,i) < KHP(i,i)) {
-				// zero rows and columns
 				P.uncorrelateCovarianceSetVariance<1>(i, 0.0f);
 
-				//flag as unhealthy
 				healthy = false;
 
-				// update individual measurement health status
 				if (obs_index == 0) {
 					_fault_status.flags.bad_optflow_X = true;
 
@@ -491,12 +488,10 @@ void Ekf::fuseOptFlow()
 			}
 		}
 
-		// only apply covariance and state corrections if healthy
 		if (healthy) {
 			// apply the covariance corrections
 			P -= KHP;
 
-			// correct the covariance matrix for gross errors
 			fixCovarianceErrors(true);
 
 			// apply the state corrections