[yaml2obj] Removing debug code that scribbled 0xDEADBEEF

Now that MachO load command fields are fully covered we can fill unaccounted for bytes with 0. That allows us to sparsely specify YAML to simplify tests.

Simplifying load_commands test accordingly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@270158 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed