For 4827 - Remove TransitionPreDrawListenerTest pending tests refactoring

New tests for `FragmentPreDrawManager` are to be added in #4828

app/src/test/java/org/mozilla/fenix/home/TransitionPreDrawListenerTest.kt

-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-package org.mozilla.fenix.home
-
-import android.view.ViewTreeObserver
-import androidx.fragment.app.Fragment
-import io.mockk.mockk
-import io.mockk.verify
-import org.junit.Before
-import org.junit.Test
-
-class TransitionPreDrawListenerTest {
-
-    private lateinit var fragment: Fragment
-    private lateinit var viewTreeObserver: ViewTreeObserver
-
-    @Before
-    fun setup() {
-        fragment = mockk(relaxed = true)
-        viewTreeObserver = mockk(relaxed = true)
-    }
-
-    @Test
-    fun `adds observer when constructed`() {
-        val listener = TransitionPreDrawListener(fragment, viewTreeObserver) {}
-        verify { fragment.viewLifecycleOwner.lifecycle.addObserver(listener) }
-    }
-
-    @Test
-    fun `adds listener on create and removes on destroy`() {
-        val listener = TransitionPreDrawListener(fragment, viewTreeObserver) {}
-
-        listener.onCreateView()
-        verify { viewTreeObserver.addOnPreDrawListener(listener) }
-
-        listener.onDestroyView()
-        verify { viewTreeObserver.removeOnPreDrawListener(listener) }
-    }
-}