Consider dropping custom keyserver settings on Stretch
Since gnupg2 (2.1.15-9), “If no keyserver is explicitly configured,
dirmngr will use the built-in default of
hkps://hkps.pool.sks-keyservers.net” (dirmngr(8)). So perhaps we can
drop our custom settings.
Related issues
- Related to #11948 (closed)
Original created by @intrigeri on 11905 (Redmine)