net: ax25: remove plumbing for never-implemented DAMA Master support
The AX25_DAMA_MASTER option has been unimplemented and marked broken
ever since it was introduced in 2007 in commit
954b2e7f4c37 ("[NET]
AX.25 Kconfig and docs updates and fixes"). At this point, it is very
unlikely it will be implemented. Remove it.
Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Link: https://patch.msgid.link/20260129080908.44710-1-enelsonmoore@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>