Be a good unit test and null and reset static variables after using them. (#3306)

Co-authored-by: Mohamed Metwalli <mohamed.metwalli@sap.com>

Corona-Warn-App/src/test/java/de/rki/coronawarnapp/ui/presencetracing/organizer/create/TraceLocationCreateViewModelTest.kt

 package de.rki.coronawarnapp.ui.presencetracing.organizer.create
 
 import de.rki.coronawarnapp.R
+import de.rki.coronawarnapp.bugreporting.censors.presencetracing.TraceLocationCensor
 import de.rki.coronawarnapp.presencetracing.checkins.qrcode.TraceLocation
 import de.rki.coronawarnapp.presencetracing.locations.TraceLocationCreator
 import de.rki.coronawarnapp.server.protocols.internal.pt.TraceLocationOuterClass
@@ -15,6 +16,7 @@ import okio.ByteString.Companion.encode
 import org.joda.time.DateTime
 import org.joda.time.Duration
 import org.joda.time.Instant
+import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.extension.ExtendWith
@@ -35,6 +37,11 @@ internal class TraceLocationCreateViewModelTest : BaseTest() {
         MockKAnnotations.init(this)
     }
 
+    @AfterEach
+    fun teardown() {
+        TraceLocationCensor.dataToCensor = null
+    }
+
     @ParameterizedTest
     @MethodSource("provideArguments")
     fun `send should not be enabled for empty form`(category: TraceLocationCategory) {