[Orc] Remove a bunch of constructors from ObjectLinkingLayer.

These constructors were causing trouble for MSVC and older GCCs. This should
fix more of the build failures from r226940.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226946 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed