TableGen: Remove the ResolveFirst mechanism

Summary:
It is no longer used.

Change-Id: I1e47267d1975d43ad43acd6347f54e958e3b6c86

Reviewers: arsenm, craig.topper, tra, MartinO

Subscribers: wdng, llvm-commits

Differential Revision: https://reviews.llvm.org/D43757

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@326789 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed