[Lanai] Remove dead functions from LanaiRegisterInfo

getEHExceptionRegister and getEHHandlerRegister are unused and were removed 
from most backends in rL192099. This patch removes them from Lanai.

Differential Revision: https://reviews.llvm.org/D36829


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@311531 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed