[cmake] When getting Ninja version, don't include CMakeNinjaFindMake which doesn't play well with passing CMAKE_MAKE_PROGRAM from the commandline without a path.
[cmake] When getting Ninja version, don't include CMakeNinjaFindMake
which doesn't play well with passing CMAKE_MAKE_PROGRAM from the
commandline without a path.

Fixes a bug introduced in r361280.

Thanks to Mikael Holmén for reporting this!

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@361501 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-llvm,llvm-mirror/llvm,llvm-mirror/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,apple/swift-llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm