delete variable (#3813)
delete variable (#3813)

* delete variable

* delete duplicate code

* add empty line

* delete empty line

alexanderlz/redash,alexanderlz/redash,getredash/redash,getredash/redash,alexanderlz/redash,getredash/redash,denisov-vlad/redash,denisov-vlad/redash,denisov-vlad/redash,alexanderlz/redash,denisov-vlad/redash,getredash/redash,denisov-vlad/redash,getredash/redash