Keep check-ins after submission (EXPOSUREAPP-6256) (#2773)

Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>

Corona-Warn-App/src/main/java/de/rki/coronawarnapp/submission/task/SubmissionTask.kt

@@ -165,7 +165,6 @@ class SubmissionTask @Inject constructor(
 
         Timber.tag(TAG).d("Submission successful, deleting submission data.")
         tekHistoryStorage.clear()
-        checkInsRepository.clear()
         submissionSettings.symptoms.update { null }
 
         autoSubmission.updateMode(AutoSubmission.Mode.DISABLED)

Corona-Warn-App/src/test/java/de/rki/coronawarnapp/submission/task/SubmissionTaskTest.kt

@@ -114,7 +114,6 @@ class SubmissionTaskTest : BaseTest() {
         every { timeStamper.nowUTC } returns Instant.EPOCH.plus(Duration.standardHours(1))
 
         every { checkInRepository.allCheckIns } returns flowOf(emptyList())
-        coEvery { checkInRepository.clear() } just Runs
         coEvery { checkInsTransformer.transform(any(), any()) } returns emptyList()
     }
 
@@ -177,7 +176,6 @@ class SubmissionTaskTest : BaseTest() {
             analyticsKeySubmissionCollector.reportSubmittedInBackground()
 
             tekHistoryStorage.clear()
-            checkInRepository.clear()
             submissionSettings.symptoms
             settingSymptomsPreference.update(match { it.invoke(mockk()) == null })