/etc/logcheck/ignore.d.server/talkd is in talkd 0.17-15build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ talkd\[[0-9]+\]: connect from [[:alnum:].]+$