dns_utils: remove a few obsolete things

src/common/dns_utils.cpp

@@ -27,8 +27,6 @@
 // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "common/dns_utils.h"
-#include "common/i18n.h"
-#include "cryptonote_basic/cryptonote_basic_impl.h"
 // check local first (in the event of static or in-source compilation of libunbound)
 #include "unbound.h"
 
@@ -326,8 +324,6 @@ bool DNSResolver::check_address_syntax(const char *addr) const
 namespace dns_utils
 {
 
-const char *tr(const char *str) { return i18n_translate(str, "tools::dns_utils"); }
-
 //-----------------------------------------------------------------------
 // TODO: parse the string in a less stupid way, probably with regex
 std::string address_from_txt_record(const std::string& s)