Rust 1.64: Revert statx patch for sb2 compatibility

[rubdos]

I noticed you were trying out 1.64. Instead of implementing statx in sb2, reverting the statx compatibility patches was actually rather easy, and might provide a workaround.

I tried building this against LLVM 16, but apparently the highest supported LLVM is 14 for 1.64, so I'll retry against that and report back.

Part of The Rust Plan

[rubdos]

I seem to be getting a lot further with LLVM 14, although now I'm getting complaints about not finding crti.o. As far as I understand, that has to do with cross-aarch64-glibc and cross-armv7hl-glibc (and family) not being available (and me commenting them out to try and build). Is there a way to get a hold of these packages? It's weird, since the i486 version is actually available.

[rubdos]

Very close to working :-)

Checking for unpackaged file(s): /usr/lib/rpm/check-files /home/rubdos/rpmbuild/BUILDROOT/rust-1.64.0+git1-1.i386
error: Installed (but unpackaged) file(s) found:
   /usr/libexec/rust-analyzer-proc-macro-srv

EDIT: I removed the executable from the package, since it doesn't seem necessary to have it around for compiling packages. If you'd rather see it packaged, I'd happily add it to %files instead. I have a packaged i486 Rust now.

[rubdos]

Something I just noticed: would it be worth squashing this new patch into 0002-Disable-statx-for-all-builds.-JB-50106.patch, since that targets basically the same issue?