cpu: Eliminate cpudef_init(), cpudef_setup()

x86_cpudef_init() doesn't do anything anymore, cpudef_init(),
cpudef_setup(), and x86_cpudef_init() can be finally removed.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

bsd-user/main.c

@@ -753,9 +753,6 @@ int main(int argc, char **argv)
     }
 
     cpu_model = NULL;
-#if defined(cpudef_setup)
-    cpudef_setup(); /* parse cpu definitions in target config file (TBD) */
-#endif
 
     optind = 1;
     for(;;) {