[clang] [llvm] Remove Native Client support (PR #133661)

[Derek Schuff via llvm-commits]

dschuff wrote:

NaCl deprecation and removal from Chromium is now complete, so we can remove NaCl support from LLVM now.
I don't know whether there might still be any other users of bundle alignment (I have heard of 1 or 2 over the years). If so, maybe we can figure something out for their use cases that's simpler than what we have now.
IIRC the bundle alignment feature is not technically tied to NaCl, so I'd propose to land this PR or one like it to remove the NaCl target, then maybe post on discourse or something to see if there are other users who depend on that.
If @brad0 wants to go ahead with this PR that's fine, or I'm also happy to pick it up.

https://github.com/llvm/llvm-project/pull/133661