rem: dev: Clean up unnecessary code in qpcache

Removed some code from the cache database implementation that was left over from before it and the zone database implementation were separated.

Merge branch 'each-qpcache-refactor' into 'main'

See merge request isc-projects/bind9!9991

bin/tests/system/digdelv/tests.sh

@@ -1483,6 +1483,7 @@ if [ -x "$DELV" ]; then
 
   n=$((n + 1))
   echo_i "check that delv handles REFUSED when chasing DS records ($n)"
+  ret=0
   delv_with_opts @10.53.0.2 +root xxx.example.tld A >delv.out.test$n 2>&1 || ret=1
   grep ";; resolution failed: broken trust chain" delv.out.test$n >/dev/null || ret=1
   if [ $ret -ne 0 ]; then echo_i "failed"; fi
@@ -1490,9 +1491,11 @@ if [ -x "$DELV" ]; then
 
   n=$((n + 1))
   echo_i "check NS output from delv +ns ($n)"
+  ret=0
   delv_with_opts -i +ns +nortrace +nostrace +nomtrace +novtrace +hint=../_common/root.hint ns example >delv.out.test$n || ret=1
   lines=$(awk '$1 == "example." && $4 == "NS" {print}' delv.out.test$n | wc -l)
   [ $lines -eq 2 ] || ret=1
+  if [ $ret -ne 0 ]; then echo_i "failed"; fi
   status=$((status + ret))
 
   n=$((n + 1))