[test] Remove a needless declaration of REQUIRES: target-windows
[test] Remove a needless declaration of REQUIRES: target-windows

This test only relies on running on a case insensitive file system,
the exact target triple of the toolchain shouldn't matter.

Differential Revision: https://reviews.llvm.org/D68136

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@373697 91177308-0d34-0410-b5e6-96231b3b80d8

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