x86/Kconfig: Remove obsolete config X86_32_SMP
Commit
0f08c3b22996 ("x86/smp: Reduce code duplication")
removed the only use of CONFIG_X86_32_SMP.
Remove the now obsolete config X86_32_SMP too.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20231128090016.29676-1-lukas.bulwahn@gmail.com