[fenix] Closes https://github.com/mozilla-mobile/fenix/issues/5268 - Fix 2 detekt errors

app/src/test/java/org/mozilla/fenix/ext/DrawableTest.kt

@@ -29,13 +29,16 @@ class DrawableTest {
         assertTrue(returnRec.contains(0, 0, -10, 10))
     }
 
-    private class TestDrawable() : Drawable() {
+    private class TestDrawable : Drawable() {
         var boundsChanged: Boolean = false
-        override fun getOpacity(): Int { return 0 }
+        override fun getOpacity(): Int {
+            return 0
+        }
+
         override fun draw(canvas: Canvas) {}
         override fun setAlpha(alpha: Int) {}
         override fun setColorFilter(cf: ColorFilter) {}
-        protected override fun onBoundsChange(bounds: Rect) {
+        override fun onBoundsChange(bounds: Rect) {
             boundsChanged = true
             super.onBoundsChange(bounds)
         }

app/src/test/java/org/mozilla/fenix/ext/NavControllerTest.kt

@@ -1,28 +1,26 @@
 package org.mozilla.fenix.ext
 
-import kotlinx.coroutines.ObsoleteCoroutinesApi
-import org.mozilla.fenix.TestApplication
-import org.junit.Test
-import org.junit.runner.RunWith
-import org.robolectric.RobolectricTestRunner
-import org.robolectric.annotation.Config
-import io.mockk.mockk
-import io.mockk.verify
-import io.mockk.every
-import io.mockk.mockkClass
 import android.os.Bundle
 import androidx.navigation.NavController
+import androidx.navigation.NavDestination
 import androidx.navigation.NavDirections
 import androidx.navigation.NavOptions
-import org.mozilla.fenix.BuildConfig
-import androidx.navigation.NavDestination
 import androidx.navigation.Navigator.Extras
+import io.mockk.every
+import io.mockk.mockk
+import io.mockk.verify
+import kotlinx.coroutines.ObsoleteCoroutinesApi
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mozilla.fenix.TestApplication
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
 
 @ObsoleteCoroutinesApi
 @RunWith(RobolectricTestRunner::class)
 @Config(application = TestApplication::class)
 
-class NavControllerTest() {
+class NavControllerTest {
 
     val navController: NavController = mockk(relaxed = true)
     val navDirections = mockk<NavDirections>(relaxed = true)
@@ -30,7 +28,6 @@ class NavControllerTest() {
     val mockExtras: Extras = mockk(relaxed = true)
     val mockOptions: NavOptions = mockk(relaxed = true)
     val mockBundle: Bundle = mockk(relaxed = true)
-    val mockBuildConfig = mockkClass(BuildConfig::class)
 
     @Test
     fun `Nav with id and directions args`() {