TUN-2243: Revert "STOR-519: Add db-connect, a SQL over HTTPS server"

This reverts commit 5da2109811.

vendor/github.com/kshvakov/clickhouse/lib/column/ipv6.go

@@ -1,33 +0,0 @@
-package column
-
-import (
-	"net"
-
-	"github.com/kshvakov/clickhouse/lib/binary"
-)
-
-type IPv6 struct {
-	base
-}
-
-func (*IPv6) Read(decoder *binary.Decoder) (interface{}, error) {
-	v, err := decoder.Fixed(16)
-	if err != nil {
-		return nil, err
-	}
-	return net.IP(v), nil
-}
-
-func (ip *IPv6) Write(encoder *binary.Encoder, v interface{}) error {
-	netIP, ok := v.(net.IP)
-	if !ok {
-		return &ErrUnexpectedType{
-			T:      v,
-			Column: ip,
-		}
-	}
-	if _, err := encoder.Write([]byte(netIP.To16())); err != nil {
-		return err
-	}
-	return nil
-}