Drop reference to old cpio-gplv2

On target images cpio is use now provided by libarchive-cpio, and since
it declares `Provides: cpio` there is no need to additional metadata in
other packages. In this context, since package cpio-gplv2 does not
longer exist, drop the reference to it without adding any mention to
libarchive-cpio.

Signed-off-by: Walter Lozano <walter.lozano@collabora.com>

debian/control

@@ -26,7 +26,7 @@ Package: initramfs-tools-core
 Architecture: all
 Multi-Arch: foreign
 Recommends: ${busybox:Recommends}, pigz
-Depends: klibc-utils (>= 2.0.4-8~), cpio-gplv2 | cpio , kmod, udev, e2fsprogs, ${misc:Depends}
+Depends: klibc-utils (>= 2.0.4-8~), cpio , kmod, udev, e2fsprogs, ${misc:Depends}
 Suggests: bash-completion
 Breaks: initramfs-tools (<< 0.121~), ${busybox:Breaks}
 Replaces: initramfs-tools (<< 0.121~)