log: remove hard-coded prefix from log messages

daemon/bindings/cache.c

daemon/bindings/impl.h

daemon/bindings/net.c

daemon/engine.c

daemon/ffimodule.c

daemon/http.c

daemon/io.c

daemon/main.c

daemon/network.c

daemon/tls.c

daemon/tls_ephemeral_credentials.c

daemon/tls_session_ticket-srv.c

daemon/worker.c

daemon/zimport.c

lib/cache/api.c

lib/cache/cdb_lmdb.c

lib/cache/entry_list.c

lib/cache/entry_rr.c

lib/dnssec/ta.c

lib/log.c