macdeploy: remove unused detached-sig-apply

Signature application is now done with signapple.

contrib/macdeploy/detached-sig-apply.sh

@@ -1,27 +0,0 @@
-#!/bin/sh
-# Copyright (c) 2014-2021 The Bitcoin Core developers
-# Distributed under the MIT software license, see the accompanying
-# file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-export LC_ALL=C
-set -e
-
-UNSIGNED="$1"
-SIGNATURE="$2"
-ROOTDIR=dist
-OUTDIR=signed-app
-SIGNAPPLE=signapple
-
-if [ -z "$UNSIGNED" ]; then
-  echo "usage: $0 <unsigned app> <signature>"
-  exit 1
-fi
-
-if [ -z "$SIGNATURE" ]; then
-  echo "usage: $0 <unsigned app> <signature>"
-  exit 1
-fi
-
-${SIGNAPPLE} apply "${UNSIGNED}" "${SIGNATURE}"
-mv ${ROOTDIR} ${OUTDIR}
-echo "Signed: ${OUTDIR}"