Remove assert with tautological compare from XCOFFObjectWriter.
Remove assert with tautological compare from XCOFFObjectWriter.

Remove assert of 'Sec->getCSectType() <= 0x07u' added in r369454, since its
always true.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@369462 91177308-0d34-0410-b5e6-96231b3b80d8

GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm