init/Kconfig: remove CONFIG_GCC_ASM_GOTO_OUTPUT_WORKAROUND

Several versions of GCC mis-compile asm goto with outputs. We try to
workaround this, but our workaround is demonstrably incomplete and
liable to result in subtle bugs, especially on arm64 where get_user()
has recently been moved over to using asm goto with outputs.

From discussion(s) with Linus at:

  https://lore.kernel.org/linux-arm-kernel/Zpfv2tnlQ-gOLGac@J2N7QTR9R3.cambridge.arm.com/
  https://lore.kernel.org/linux-arm-kernel/ZpfxLrJAOF2YNqCk@J2N7QTR9R3.cambridge.arm.com/

... it sounds like the best thing to do for now is to remove the
workaround and make CC_HAS_ASM_GOTO_OUTPUT depend on working compiler
versions.

The issue was originally reported to GCC by Sean Christopherson:

  https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113921

... and Jakub Jelinek fixed this for GCC 14, with the fix backported to
13.3.0, 12.4.0, and 11.5.0.

In the kernel, we tried to workaround broken compilers in commits:

  4356e9f8 ("work around gcc bugs wit...