tests: posix: removed erroneous file

tests/posix/test

@@ -1,19 +0,0 @@
-#!/bin/sh
-
-# Copyright (c) 2023 DTB <trinity@trinity.moe>
-# SPDX-License-Identifier: FSFAP
-#
-# Copying and distribution of this file, with or without modification, are
-# permitted in any medium without royalty provided the copyright notice and this
-# notice are preserved.  This file is offered as-is, without any warranty.
-
-set -e
-
-i=1
-while test -e "$i".test; do
-	printf '%s: %s: Running test...\n' "$0" "$i".test
-	./"$i".test >"$i".result
-	diff 1.expected 1.result
-	printf '%s: %s: Test passed.\n' "$0" "$i".test
-	i="$(printf '%s + %s\n' 1 "$i" | bc)"
-done