Remove redundant imports and rules

Corona-Warn-App/src/androidTest/java/de/rki/coronawarnapp/ui/onboarding/screenshot/OnboardingFragmentScreenshot.kt

@@ -14,9 +14,7 @@ import org.junit.Test
 import org.junit.runner.RunWith
 import testhelpers.BaseUITest
 import testhelpers.Screenshot
-import tools.fastlane.screengrab.DecorViewScreenshotStrategy
 import tools.fastlane.screengrab.Screengrab
-import tools.fastlane.screengrab.UiAutomatorScreenshotStrategy
 import tools.fastlane.screengrab.locale.LocaleTestRule
 
 @Screenshot

Corona-Warn-App/src/androidTest/java/de/rki/coronawarnapp/ui/onboarding/screenshot/OnboardingPrivacyFragmentScreenshot.kt

 package de.rki.coronawarnapp.ui.onboarding.screenshot
 
-import android.Manifest
 import androidx.fragment.app.testing.launchFragmentInContainer
 import androidx.test.ext.junit.runners.AndroidJUnit4
-import androidx.test.rule.GrantPermissionRule
 import de.rki.coronawarnapp.R
 import de.rki.coronawarnapp.ui.onboarding.OnboardingPrivacyFragment
 import de.rki.coronawarnapp.ui.onboarding.OnboardingPrivacyViewModel

Corona-Warn-App/src/androidTest/java/de/rki/coronawarnapp/ui/onboarding/screenshot/OnboardingTestFragmentScreenshot.kt

 package de.rki.coronawarnapp.ui.onboarding.screenshot
 
-import android.Manifest
-import android.os.SystemClock
 import androidx.fragment.app.testing.launchFragmentInContainer
 import androidx.test.ext.junit.runners.AndroidJUnit4
-import androidx.test.rule.GrantPermissionRule
 import de.rki.coronawarnapp.R
 import de.rki.coronawarnapp.ui.onboarding.OnboardingTestFragment
 import de.rki.coronawarnapp.ui.onboarding.OnboardingTestViewModel
@@ -26,11 +23,6 @@ class OnboardingTestFragmentScreenshot : BaseUITest() {
 
     @MockK lateinit var viewModel: OnboardingTestViewModel
 
-    @get:Rule val grantPermissionRule: GrantPermissionRule = GrantPermissionRule.grant(
-        Manifest.permission.READ_EXTERNAL_STORAGE,
-        Manifest.permission.WRITE_EXTERNAL_STORAGE
-    )
-
     @Rule
     @JvmField
     val localeTestRule = LocaleTestRule()