[libunwind] Remove dubious template function. NFC.
[libunwind] Remove dubious template function. NFC.

Per review by Don Hinton.

git-svn-id: 62ef012455b6b8fcec9c41ca270ebf409aae1006@321448 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/libunwind,llvm-mirror/libunwind,llvm-mirror/libunwind