gplugin/gplugin

Remove some documentation about hgflow from HACKING.md as we don't use hgflow anymore

2021-03-22, Gary Kramlich
11c702036a0a
Remove some documentation about hgflow from HACKING.md as we don't use hgflow anymore

Testing Done:
Eye testing only.

Reviewed at https://reviews.imfreedom.org/r/579/
configure_file(
input : 'gplugin.spec.in',
output : 'gplugin.spec',
configuration : version_conf)