Remove smacknet from packagegroup-security-framework

Remove smacknet from packagegroup-security-framework

smacknet is not present in 'dunfell' branches.

See: https://layers.openembedded.org/layerindex/branch/dunfell/recipes/?q=smacknet .

Bug-AGL: SPEC-3762
Signed-off-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Change-Id: I14cdb89394388399a26a4d2f4e0bc40505a54ecf
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/25883
Tested-by: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
ci-image-build: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
ci-image-boot-test: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>