Remove unused code.

dnsfilter/dnsfilter.go

@@ -38,9 +38,6 @@ var ErrInvalidSyntax = errors.New("dnsfilter: invalid rule syntax")
 // ErrInvalidSyntax is returned by AddRule when the rule was already added to the filter
 var ErrAlreadyExists = errors.New("dnsfilter: rule was already added")
 
-// ErrInvalidParental is returned by EnableParental when sensitivity is not a valid value
-var ErrInvalidParental = errors.New("dnsfilter: invalid parental sensitivity, must be either 3, 10, 13 or 17")
-
 const shortcutLength = 6 // used for rule search optimization, 6 hits the sweet spot
 
 const enableFastLookup = true         // flag for debugging, must be true in production for faster performance

dnsforward/upstream.go

@@ -76,13 +76,6 @@ type dnsOverTLS struct {
 	sync.RWMutex // protects pool
 }
 
-var defaultTLSClient = dns.Client{
-	Net:       "tcp-tls",
-	Timeout:   defaultTimeout,
-	UDPSize:   dns.MaxMsgSize,
-	TLSConfig: &tls.Config{},
-}
-
 func (p *dnsOverTLS) Address() string { return p.boot.address }
 
 func (p *dnsOverTLS) Exchange(m *dns.Msg) (*dns.Msg, error) {
@@ -128,13 +121,6 @@ type dnsOverHTTPS struct {
 	boot bootstrapper
 }
 
-var defaultHTTPSTransport = http.Transport{}
-
-var defaultHTTPSClient = http.Client{
-	Transport: &defaultHTTPSTransport,
-	Timeout:   defaultTimeout,
-}
-
 func (p *dnsOverHTTPS) Address() string { return p.boot.address }
 
 func (p *dnsOverHTTPS) Exchange(m *dns.Msg) (*dns.Msg, error) {