Revert "lineage: Sync external/dwarves from AOSP"

This reverts commit badc0985.

Lets just use prebuilt pahole from Google since it's disallowed
to be used as a source built host tool [1].

[1] https://android.googlesource.com/platform/build/+/master/Changes.md#path-tools-path_tools

Change-Id: I05354498a37ec54e93d66998ff97481e25ae1763