[cmake] Remove obsolete files, docs and CMake variables related to the standalone build (#112741)
The runtimes used to support a build mode called the "Standalone build",
which isn't supported anymore (and hasn't been for a few years).
However, various places in the code still contained stuff whose only
purpose was to support that build mode, and some outdated documentation.
This patch cleans that up (although I probably missed some).
- Remove HandleOutOfTreeLLVM.cmake which isn't referenced anymore
- Remove the LLVM_PATH CMake variable which isn't used anymore
- Update some outdated documentation referencing standalone builds
GitOrigin-RevId: 6127724786d581d2653df7420d1f28709288a107
1 file changed
