This PR is similar to PR #7712 + #7713

The list views of the Users Back-end Component all have two ordering options:
1. You can order the list on any column by clicking on the column heading (Status, Title, Access, Author, Language, Date, Hits, ID). You can reverse the order direction by clicking a second time on the same column heading.
2. Another way to order the list is to click the Sort Table By: dropdown option.

IMHO option 2 Sort Table By: dropdown option is not very user friendly for new users and for experienced users it's another option to focus on. Because all ordering options are already available via column headers (option 1), I decided to create this PR to remove the duplicate ordering dropdown option

Testing instructions

Before the PR

The lists can be ordered by clicking on column headers,
and by clicking on the "Sort Table By" dropdown option on the top right.

Users > Manage > Users

Users > Manage > User Groups

Users > Manage > Viewing Access Levels

Users > Manage > User Notes

Users > Manage > Note Categories

This view won't be affected by this PR, but PR #7713 will remove the extra ordering option.

After the PR

The lists can be ordered by clicking on column headers. The duplicate "Sort Table By" dropdown has been removed and the user has one option less too focus on.

Users > Manage > Users

Users > Manage > User Groups

Users > Manage > Viewing Access Levels

Users > Manage > User Notes

Users > Manage > Note Categories

This view won't be affected by this PR, but PR #7713 will remove the extra ordering option.