Fix Bug in Process.c to print the exit statement in process_exit instead of exit syscall to handle unexpected/bad exits

src/userprog/syscall.c

@@ -105,7 +105,6 @@ syscall_exit (int status)
 {
   /* Sets exit_status of the thread to status. thread_exit () will call
      process_exit () if user programs are allowed. */
-  printf ("%s: exit(%d)\n", thread_current()->name, status);
   thread_current ()->exit_status = status;
   thread_exit ();
 }