[IR] Remove TerminateInst's "NameStr" argument

TerminateInst can't have a name because it doesn't produce a result.  No
functionality change is intended, this is just a cleanup.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244276 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed