This commit removes the iptables RPMs from the distro and flock layers,
because iptables is now built by the distro layer due to commit
I63d557112c653d59b88ac3a4798dee0e89246612.
Verification: A layered build is successful with this change.
Partial-Bug: #1949217
Depends-On: I63d557112c653d59b88ac3a4798dee0e89246612
Signed-off-by: M. Vefa Bicakci <vefa.bicakci@windriver.com>
Change-Id: I5275d1aefcf603d79aac7dcb2e3d97cae9e7d5d2