remove duplicate symbol version script entries
remove duplicate symbol version script entries

GNU ld ignores duplicates, but lld produces a warning.

Differential Revision:	https://reviews.llvm.org/D35121


git-svn-id: f99161ee8ccfe2101cbe1bdda2220bce2ed25485@307399 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/openmp,llvm-mirror/openmp,llvm-mirror/openmp,llvm-mirror/openmp,llvm-mirror/openmp