Resolve "cache size = "max""

Closes #524 (closed)

ci/respdiff/kresd.config

@@ -7,9 +7,6 @@ net.ipv6=false
 -- Auto-maintain root TA
 trust_anchors.add_file('.local/etc/knot-resolver/root.keys')
 
--- Large cache size, so we don't need to flush often
--- This can be larger than available RAM, least frequently accessed
--- records will be paged out
 cache.size = 1024 * MB
 
 -- Load Useful modules