Revert "fts: Add static library to package files"

This reverts commit 7400fb56.

This change is not needed anymore as it turns out that the error it was
supposed to fix only appeared on my local builds. The error simply
disappeared after a fresh full rebuild.

Signed-off-by: Thierry Escande <thierry.escande@huawei.com>

recipes-core/fts/fts_%.bbappend

-# SPDX-FileCopyrightText: Huawei Inc.
-#
-# SPDX-License-Identifier: Apache-2.0
-
-FILES:${PN} += "${libdir}/*.a"