remove obsolete

tools/gdb/mknative-gdb

@@ -1,5 +1,5 @@
 #!/bin/sh
-#	$NetBSD: mknative-gdb,v 1.10 2020/09/17 16:05:34 christos Exp $
+#	$NetBSD: mknative-gdb,v 1.11 2020/09/17 16:09:18 christos Exp $
 #
 # Shell script for generating all the constants needed for a native
 # platform build of src/external/gpl3/gdb
@@ -153,8 +153,6 @@ get_gdb_libgnulib () {
 
 get_gdb_libgdb () {
 	local _GDBP=$_GDB/lib/libgdb
-	mkdir -p $_TOP/$_GDBP/arch/$_MACHINE_SUBDIR/gnulib/import
-	mkdir -p $_TOP/$_GDBP/arch/$_MACHINE_SUBDIR/gdbsupport/import
 
 	{
 		getvars gdb/Makefile \