Revert "Update supported features in the generic CPU configuration"

This reverts commit 11afbf39.

There are 10 tests still failing after follow-up fix b5d0bf9b, this should get the following bots back to green:
 - https://lab.llvm.org/buildbot/#/builders/183/builds/8194
 - https://lab.llvm.org/buildbot/#/builders/186/builds/9491
 - https://lab.llvm.org/buildbot/#/builders/214/builds/3908
 - https://lab.llvm.org/buildbot/#/builders/93/builds/11740
 - https://lab.llvm.org/buildbot/#/builders/231/builds/4200
 - https://lab.llvm.org/buildbot/#/builders/121/builds/24519
 - https://lab.llvm.org/buildbot/#/builders/230/builds/4466
 - https://lab.llvm.org/buildbot/#/builders/94/builds/11639
 - https://lab.llvm.org/buildbot/#/builders/45/builds/9325
 - https://lab.llvm.org/buildbot/#/builders/124/builds/5219
 - https://lab.llvm.org/buildbot/#/builders/67/builds/8623
 - https://lab.llvm.org/buildbot/#/builders/123/builds/13836
 - https://lab.llvm.org/buildbot/#/builders/109/builds/49355
 - https://lab.llvm.org/buildbot/#/builders/58/builds/27751
 - https://lab.llvm.org/buildbot/#/builders/117/builds/9922
 - https://lab.llvm.org/buildbot/#/builders/16/builds/37012
 - https://lab.llvm.org/buildbot/#/builders/104/builds/9490
 - https://lab.llvm.org/buildbot/#/builders/42/builds/7725
 - https://lab.llvm.org/buildbot/#/builders/196/builds/20077
 - https://lab.llvm.org/buildbot/#/builders/3/builds/15217
 - https://lab.llvm.org/buildbot/#/builders/6/builds/15251
 - https://lab.llvm.org/buildbot/#/builders/9/builds/15247
 - https://lab.llvm.org/buildbot/#/builders/36/builds/26487
 - https://lab.llvm.org/buildbot/#/builders/54/builds/2474
 - https://lab.llvm.org/buildbot/#/builders/74/builds/14536
 - https://lab.llvm.org/buildbot/#/builders/5/builds/28555