remove unused variable

sysfile.c

@@ -302,7 +302,7 @@ sys_mknod(void)
   struct inode *ip;
   char *path;
   int len;
-  int type, major, minor;
+  int major, minor;
   
   if((len=argstr(0, &path)) < 0 ||
      argint(1, &major) < 0 ||