tests: remove unneccassary test script

tests/xbps/libxbps/shell/xbps_conf_test.sh

@@ -1,16 +0,0 @@
-#! /usr/bin/env atf-sh
-
-# Tests to verify that xbps.conf features work
-
-atf_test_case tc1
-
-tc1_head() {
-	atf_set "descr" "Tests for xbps.conf: include "
-}
-
-tc1_body() {
-}
-
-atf_init_test_cases() {
-	atf_add_test_case tc1
-}