drop transitionall zfs-dbg package

this effectively reverts the commit
755c716 ("d/control: add transitional zfs-dbg package")

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

debian/control

@@ -285,17 +285,3 @@ Description: Solaris Porting Layer user-space utilities for Linux (dummy)
  to Linux primitives.
  .
  This is a transitional dummy package. It can safely be removed.
-
-Package: zfs-dbg
-Section: contrib/metapackages
-Architecture: all
-Suggests: libnvpair3linux-dbgsym,
-         libpam-zfs-dbgsym,
-         libuutil3linux-dbgsym,
-         libzfs4linux-dbgsym,
-         libzfsbootenv1linux-dbgsym,
-         libzpool5linux-dbgsym,
-         zfs-test-dbgsym,
-         zfsutils-linux-dbgsym,
-         zfs-zed-dbgsym,
-Description: Transitional package. It can be safely removed.

debian/rules

@@ -91,9 +91,6 @@ override_dh_python3:
 override_dh_makeshlibs:
 	dh_makeshlibs -a -V
 
-override_dh_strip:
-	dh_strip --dbgsym-migration='zfs-dbg (<< 2.0.4~)'
-
 override_dh_auto_clean:
 	find . -name .gitignore -delete
 	rm -rf zfs-$(DEB_VERSION_UPSTREAM)