PM: remove unused core_name variable

servers/pm/glo.h

@@ -19,7 +19,6 @@ EXTERN int who_p, who_e;	/* caller's proc number, endpoint */
 EXTERN int call_nr;		/* system call number */
 
 extern _PROTOTYPE (int (*call_vec[]), (void) );	/* system call handlers */
-extern char core_name[];	/* file name where core images are produced */
 EXTERN sigset_t core_sset;	/* which signals cause core images */
 EXTERN sigset_t ign_sset;	/* which signals are by default ignored */
 

servers/pm/table.c

@@ -10,9 +10,6 @@
 #include "mproc.h"
 #include "param.h"
 
-/* Miscellaneous */
-char core_name[] = "core";	/* file name where core images are produced */
-
 _PROTOTYPE (int (*call_vec[]), (void) ) = {
 	no_sys,		/*  0 = unused	*/
 	do_exit,	/*  1 = exit	*/