Extract usage information into a separate file.

console-tools/deallocvt.c

@@ -13,13 +13,6 @@
 /* From <linux/vt.h> */
 #define VT_DISALLOCATE  0x5608  /* free memory associated to vt */
 
-const char deallocvt_usage[] =
-	"deallocvt N\n"
-#ifndef BB_FEATURE_TRIVIAL_HELP
-	 "\nDeallocate unused virtual terminal /dev/ttyN\n"
-#endif
-	 ;
-
 int deallocvt_main(int argc, char *argv[])
 {
 	int fd, num, i;