code: func (builder *Builder) Delete(collection string, cond c.Condition) (string, []interface{}) {
  	var buffer bytes.Buffer
  	var args []interface{}
  
  	buffer.WriteString("DELETE FROM ")
  	buffer.WriteString(builder.config.EscapeChar)
  	buffer.WriteString(collection)
  	buffer.WriteString(builder.config.EscapeChar)
  
  	if s, arg := builder.where(cond); s != "" {
  		buffer.WriteString(" ")
  		buffer.WriteString(s)
  		args = append(args, arg...)
  	}
  
  	buffer.WriteString(";")
  
  	return buffer.String(), args
  }
docs: // Delete generates query for delete.