Revert "kbuild: Check if linker supports the -X option"

Revert "kbuild: Check if linker supports the -X option"

This reverts commit 9e3ba8552199f3d98cf63f416db9582cf6b59a86.

According to the commit description, this ld-option test was added for
the gold linker at that time.

Commit 260b2630cc74 ("kbuild: Fail if gold linker is detected") gave
up the gold linker support after all.

I tested the BFD linker from binutils 2.23 and LLD from LLVM 11.0.0.
Both of them support the -X option.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>