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

This reverts commit 5da2109811.

vendor/github.com/kshvakov/clickhouse/lib/column/int64.go

@@ -1,40 +0,0 @@
-package column
-
-import (
-	"github.com/kshvakov/clickhouse/lib/binary"
-)
-
-type Int64 struct{ base }
-
-func (Int64) Read(decoder *binary.Decoder) (interface{}, error) {
-	v, err := decoder.Int64()
-	if err != nil {
-		return int64(0), err
-	}
-	return v, nil
-}
-
-func (i *Int64) Write(encoder *binary.Encoder, v interface{}) error {
-	switch v := v.(type) {
-	case int:
-		return encoder.Int64(int64(v))
-	case int64:
-		return encoder.Int64(v)
-	case []byte:
-		if _, err := encoder.Write(v); err != nil {
-			return err
-		}
-		return nil
-
-	// this relies on Nullable never sending nil values through
-	case *int:
-		return encoder.Int64(int64(*v))
-	case *int64:
-		return encoder.Int64(*v)
-	}
-
-	return &ErrUnexpectedType{
-		T:      v,
-		Column: i,
-	}
-}