They can remove few useless channels and bring back the WE channel. They can also remove many channels which are already coming in DD+. If DD+ removes them then they can add them in their tp. It will save bandwidth.
I think SD people will know more than me so I think there might be some other reason.
It's not We that is gone, but People. I for one am happy that channel has been taken off, it's the most biased mallu news channel in the skies...