x86/Kconfig: Remove references to obsolete Kconfig symbols

Remove two symbols referenced in Kconfig which have been removed
previously by:

  ef3c67b ("mfd: intel_msic: Remove driver for deprecated platform")
  1b79fc4 ("x86/apb_timer: Remove driver for deprecated platform")

Detected by scripts/checkkconfigsymbols.py.

  [ bp: Merge into a single patch. ]

Suggested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210803113531.30720-5-lukas.bulwahn@gmail.com

Author: bulwahn

arch/x86/Kconfig

@@ -605,9 +605,7 @@ config X86_INTEL_MID
 	depends on X86_IO_APIC
 	select I2C
 	select DW_APB_TIMER
-	select APB_TIMER
 	select INTEL_SCU_PCI
-	select MFD_INTEL_MSIC
 	help
 	  Select to build a kernel capable of supporting Intel MID (Mobile
 	  Internet Device) platform systems which do not have the PCI legacy