testsuite: Don't disable LLVM ways due to unversioned llc
Previously we would silently disable the LLVM testsuite ways when LLC is
set to an unversioned llc executable (e.g.
llc instead of
Presumably this was because we were lax in checking the LLVM version in
configure. However, this is no longer the case and consequently this
confusing behavior is no longer necessary.
Test Plan: Validate
Reviewed By: angerman
Subscribers: michalt, rwbarton, thomie, carter
Differential Revision: https://phabricator.haskell.org/D4333