Deprecate <isc/deprecated.h>

We refactor more freely these days.

lib/isc/Makefile.am

@@ -23,7 +23,6 @@ libisc_la_HEADERS =			\
 	include/isc/condition.h		\
 	include/isc/counter.h		\
 	include/isc/crc64.h		\
-	include/isc/deprecated.h	\
 	include/isc/dir.h		\
 	include/isc/endian.h		\
 	include/isc/entropy.h		\

lib/isc/include/isc/deprecated.h

@@ -1,20 +0,0 @@
-/*
- * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
- *
- * SPDX-License-Identifier: MPL-2.0
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, you can obtain one at https://mozilla.org/MPL/2.0/.
- *
- * See the COPYRIGHT file distributed with this work for additional
- * information regarding copyright ownership.
- */
-
-#pragma once
-
-#if (__GNUC__ + 0) > 3
-#define ISC_DEPRECATED __attribute__((deprecated))
-#else		       /* if (__GNUC__ + 0) > 3 */
-#define ISC_DEPRECATED /* none */
-#endif		       /* __GNUC__ > 3*/

lib/isc/include/isc/util.h

@@ -373,11 +373,6 @@ mock_assert(const int result, const char *const expression,
 #define ISC_ALIGN(x, a) (((x) + (a)-1) & ~((uintmax_t)(a)-1))
 #endif /* ifdef __GNUC__ */
 
-/*%
- * Misc
- */
-#include <isc/deprecated.h>
-
 /*%
  * Swap
  */