Remove layering_check and parse_headers from cxx/intexer/proto package (#4528)
Remove layering_check and parse_headers from cxx/intexer/proto package (#4528)

Bazel will start supporting layering check in the next version and then
this package will start failing
(https://github.com/bazelbuild/bazel/issues/11501). This PR removes
enabled  freatures from this packages until the violations are fixed.
kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe