> What is this? Debugging-remainder? If so remove.

@dengemann It's from _lcmv.py. It *might* be a debugging remainder... but I actually always assumed it's there to let people reading the code understand that linalg.pinv() with a regularization parameter is equivalent to the commented line and then doing an inverse without the reg parameter. I.e. it helped me to understand what's going on because I'd understand regularization the way it's written out in the comment and didn't know, first looking at the code, that pinv() will do that. So I would keep it... although we might as well change it to a comment like "Regularizing and calculating inverse of cross-spectral density". (and covariance in LCMV)