x86/cpu: Remove x86_coreid_bits

No more users.

Signed-off-by: Thomas Gleixner <[e-mail]>
Tested-by: Juergen Gross <[e-mail]>
Tested-by: Sohil Mehta <[e-mail]>
Tested-by: Michael Kelley <[e-mail]>
Tested-by: Zhang Rui <[e-mail]>
Tested-by: Wang Wendy <[e-mail]>
Tested-by: K Prateek Nayak <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

arch/x86/include/asm/processor.h

···
 #endif
 	__u8			x86_virt_bits;
 	__u8			x86_phys_bits;
-	/* CPUID returned core id bits: */
-	__u8			x86_coreid_bits;
 	/* Max extended CPUID function supported: */
 	__u32			extended_cpuid_level;
 	/* Maximum supported CPUID level, -1=no CPUID: */

arch/x86/kernel/cpu/common.c

···
 	c->x86_vendor_id[0] = '\0'; /* Unset */
 	c->x86_model_id[0] = '\0';  /* Unset */
 	c->x86_max_cores = 1;
-	c->x86_coreid_bits = 0;
 #ifdef CONFIG_X86_64
 	c->x86_clflush_size = 64;
 	c->x86_phys_bits = 36;