remove Makefile patching and fix links in spec
Work around the broken mathcomp links in the spec (see https://github.com/coq/coq/issues/18434). While at it, remove the Makefile.coq.patch
hack.
Work around the broken mathcomp links in the spec (see https://github.com/coq/coq/issues/18434). While at it, remove the Makefile.coq.patch
hack.