Revert relax_elf_relocations default change This reverts commit 441086879821d554ecdfde391e767d1a954fd5e2 (#106511). The change caused linker failures with the binutils version used by cross (#115239), as well as miscompilations when using the mold linker (https://rust-lang.zulipchat.com/#narrow/stream/122651-general/topic/SIGILL.20in.20build-script-build.20with.20nightly-2023-08-25/near/387506479).