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

arch/x86/Kconfig

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 3762f41b..5a6728d 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -384,10 +384,6 @@
 	def_bool y
 	depends on INTEL_IOMMU && ACPI
 
-config X86_32_SMP
-	def_bool y
-	depends on X86_32 && SMP
-
 config X86_64_SMP
 	def_bool y
 	depends on X86_64 && SMP