ruleset-sources: Remove the abuse.ch SSL list from the suricata sources

ruleset-sources: Remove the abuse.ch SSL list from the suricata sources

- The abuse.ch ssl suricata list has stopped being updated since 2025-06-25
- Looking at all of the abuse.ch lists, none of them are being updated anymore so abuse.ch
   becoming part of spamhaus looks to have stopped all work on free versions of the lists
- This change modifies the abuse.ch entry so that it no longer can be installed but also
   if already installed it will remove it.
- The patch has also made a few minor typo corrections in comments.

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>