Revert "Proper credit for the sample creators"

Reverts LMMS/Samples#5

We already decided on creating a .txt file showing details such as who created it, the licensing for each and every sample (CC0) and more links for the artists. Since we are renaming the samples, no one can know who created each sample, something the artists have to me they really don't want. That is why we decided to create this file. Also, most of the people who gave us their samples are very popular. So if people see their name there, they will want to use the sample library even more.

I just wanted to clear any confusion on this subject because I think there is some. I have been       commit  ing samples for other artists who have amazing samples, but might not know how to use GitHub or have the time. I have created and contributed some samples myself and am still working on contributing more. To me, as long as they have good licensing, we have full permission, and they sound amazing, there is no reason why we should not use them.