Remove unneeded test

What does this MR do and why?

This MR removes an unneeded test.

The test was changed in 7233387a when the SAAS-only integration was removed. With the SAAS-only integration logic removed this test has no reason to exist in EE now, as the remaining test is covered already by the one in Core, as there is no special EE overwritten logic anymore.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #355896 (closed)