[Forwardport] Remove unnecessary class import, see #18280

[mage2pratik]

Original Pull Request

#18670

Description (*)

In magento2/#18280 this was added to sort the collection ...

use Magento\Framework\Data\Collection;`
...
->setDirection(Collection::SORT_ORDER_ASC)

Instead we can use setAscendingDirection(). If not Magento\Framework\Api\SortOrder::SORT_ASC would be more correct. (?)

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[magento-engcom-team]

Hi @mage2pratik. Thank you for your contribution
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[sreichel]

@mage2pratik there is already a PR for 2.3 ;)

See #18671

[okorshenko]

Duplicate of #18671