Revert "[SLP][NFC]Add a test with the incorrect minbitwidth in alternate nodes, NFC"
This reverts commit 0dca7ee4480f11cd0230d316ccc5d2c7234a4b31.
This broke check-llvm, including on premerge.
https://lab.llvm.org/buildbot/#/builders/137/builds/28194
https://lab.llvm.org/staging/#/builders/21/builds/7649