x86: remove struct cpu_model_info

No one uses struct cpu_model_info on x86_64 now.
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/setup_64.c

@@ -869,12 +869,6 @@ static void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c)
 		c->x86_vendor = X86_VENDOR_UNKNOWN;
 }
 
-struct cpu_model_info {
-	int vendor;
-	int family;
-	char *model_names[16];
-};
-
 /* Do some early cpuid on the boot CPU to get some parameter that are
    needed before check_bugs. Everything advanced is in identify_cpu
    below. */