testing/criu: disable for now

Another error not replicated in local builds:

  LINK     images/built-in.o
ld: cannot find ,-O1,--sort-common: No such file or directory
make[1]: *** [images/Makefile:118: images/built-in.o] Error 1

testing/criu/APKBUILD → unmaintained/criu/APKBUILD

@@ -5,7 +5,7 @@ pkgver=3.17.1
 pkgrel=1
 pkgdesc="Process tree checkpoint/restore utility"
 url="https://criu.org"
-arch="x86_64"
+arch=""
 license="GPL-2.0-or-later LGPL-2.1-only"
 makedepends="xmlto asciidoc python3 protobuf-c-dev libnet-dev libnl3-dev
 	protobuf-dev libcap-dev"