Following 7b1d1a1658, the structure
for the reldoc target has significantly changed as result of the
ASCIIDoctor/Hugo migration. As the release notes related files
on the installation medium are inherently out of date, purge them
entirely.
Discussed within: re, doceng
No objection: re (silence), doceng (silence)
Timeout: 2 weeks
Sponsored by: Rubicon Communications, LLC ("Netgate")
(cherry picked from commit f61e92ca5a)
716f5ae59a