clang-tidy: Fix all remaining misc-include-cleaner violations

- Remove unused includes
- Add common false positive headers to misc-include-cleaner.IgnoreHeaders
- Add IWYU pragma keep for uncommon false positive headers

src/core/apparmor-setup.c

@@ -1,9 +1,11 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 
+#include "apparmor-setup.h"
+
+#if HAVE_APPARMOR
 #include <unistd.h>
 
 #include "alloc-util.h"
-#include "apparmor-setup.h"
 #include "apparmor-util.h"
 #include "errno-util.h"
 #include "fd-util.h"
@@ -11,6 +13,7 @@
 #include "log.h"
 #include "string-util.h"
 #include "strv.h"
+#endif
 
 int mac_apparmor_setup(void) {
 #if HAVE_APPARMOR