Fix test regression.

Corona-Warn-App/src/main/java/de/rki/coronawarnapp/nearby/modules/version/ENFVersion.kt

@@ -12,5 +12,6 @@ interface ENFVersion {
 
     companion object {
         const val V16 = 16000000L
+        const val V15 = 15000000L
     }
 }

Corona-Warn-App/src/test/java/de/rki/coronawarnapp/nearby/modules/diagnosiskeyprovider/DefaultDiagnosisKeyProviderTest.kt

@@ -21,9 +21,6 @@ class DefaultDiagnosisKeyProviderTest : BaseTest() {
     @MockK lateinit var enfVersion: ENFVersion
     @MockK lateinit var submissionQuota: SubmissionQuota
 
-    @MockK
-    lateinit var submissionQuota: SubmissionQuota
-
     private val exampleKeyFiles = listOf(File("file1"), File("file2"))
 
     @BeforeEach