No background fetch of test result after removing first test (EXPOSUREAPP-3816) (#1775)

* Added calls to LocalData.isTestResultNotificationSent to test removal sites

Signed-off-by: Kolya Opahle <k.opahle@sap.com>

* Removed some now unused properties from LocalData
Moved test removal to SubmissionRepository
Fixed tests to work with new test removal

Signed-off-by: Kolya Opahle <k.opahle@sap.com>

* Removed unused strings from the de-strings.xml

Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>
Co-authored-by: Ralf Gehrer <ralfgehrer@users.noreply.github.com>
Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>