contrib: remove hat-trie wrapper for qp-trie

Knot.files

src/Makefile.am

src/contrib/hat-trie/hat-trie.h

src/contrib/qp-trie/trie.c

src/contrib/qp-trie/trie.h

src/knot/conf/base.c

src/knot/conf/base.h

src/knot/conf/confio.c

src/knot/dnssec/nsec-chain.c

src/knot/dnssec/nsec3-chain.c

src/knot/dnssec/zone-sign.c

src/knot/nameserver/axfr.c

src/knot/server/server.c

src/knot/updates/changesets.c

src/knot/updates/zone-update.c

src/knot/updates/zone-update.h

src/knot/zone/contents.c

src/knot/zone/zone-tree.c

src/knot/zone/zone-tree.h

src/knot/zone/zonedb-load.c