src:iptables: drop iptables-dev transitional package

No longer required.

Closes: #939243
Signed-off-by: Arturo Borrero Gonzalez <arturo@debian.org>

debian/control

@@ -55,18 +55,6 @@ Description: administration tools for packet filtering and NAT
  .
  ebtables, ebtables-save, ebtables-restore (nft-based version)
 
-Package: iptables-dev
-Depends: libip4tc-dev (>= ${source:Version}),
-         libip6tc-dev (>= ${source:Version}),
-         libiptc-dev (>= ${source:Version}),
-         libxtables-dev (>= ${source:Version}),
-         ${misc:Depends}
-Architecture: any
-Multi-Arch: same
-Section: oldlibs
-Description: transitional dummy package
- This is a transitional dummy package. It can safely be removed.
-
 Package: libxtables12
 Multi-Arch: same
 Architecture: linux-any