[llvm] [dsymutil] Remove support for obfuscated bitcode (PR #85713)

[Jonas Devlieghere via llvm-commits]

JDevlieghere wrote:

@avillega Thanks for the revert, I got a handful of buildbot emails but none of the failures were related to my change. I'll take a look before I reland. 

https://github.com/llvm/llvm-project/pull/85713