Revert "cve-update-nvd2-native: Tweak to work better with NFS DL_DIR"

This reverts commit 7adaec468d.

It does not seem to fix the issue it was supposed to fix.
Additionally it breaks code which decides in full/partial update,
because it manipulates timestamp that code is relying on.

(From OE-Core rev: ebc65fdddd7ce51f0f1008baa30d0ae7918ae0bb)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/meta/cve-update-nvd2-native.bb

@@ -90,8 +90,6 @@ python do_fetch() {
     if update_db_file(db_tmp_file, d, database_time) == True:
         # Update downloaded correctly, can swap files
         shutil.move(db_tmp_file, db_file)
-        # Need to 'touch' the file to ensure NFS sees the data
-        os.utime(db_file)
     else:
         # Update failed, do not modify the database
         bb.warn("CVE database update failed")