Revert "Resolve test failures"

This reverts commit 6c57336fc9c36af8b8394e99cf20b27acb2270e6.

osu.Framework.Tests/Audio/TrackBassTest.cs

···
         public void TestRestart()
         {
             startPlaybackAt(1000);
-            takeEffectsAndUpdateAfter(50);
 
-            restartTrack();
+            Thread.Sleep(50);
 
-            takeEffectsAndUpdateAfter(50);
+            bass.Update();
+            restartTrack();
 
             Assert.IsTrue(track.IsRunning);
             Assert.Less(track.CurrentTime, 1000);
···
         public void TestRestartFromRestartPoint()
         {
             track.RestartPoint = 1000;
-            startPlaybackAt(3000);
 
+            startPlaybackAt(3000);
             restartTrack();
-            takeEffectsAndUpdateAfter(50);
 
             Assert.IsTrue(track.IsRunning);
             Assert.GreaterOrEqual(track.CurrentTime, 1000);
···
 
             // now set to zero frequency and update track to take effects.
             track.Frequency.Value = 0;
-            takeEffectsAndUpdateAfter(50);
+            bass.Update();
 
             var currentTime = track.CurrentTime;
 
             // assert time is frozen after 50ms sleep and didn't change with full precision, but "IsRunning" is still true.
-            takeEffectsAndUpdateAfter(50);
+            Thread.Sleep(50);
+            bass.Update();
 
             Assert.IsTrue(track.IsRunning);
             Assert.AreEqual(currentTime, track.CurrentTime);
···
             bass.Update();
 
             bass.RunOnAudioThread(() => track.Seek(20000));
-            takeEffectsAndUpdateAfter(50);
-
             Assert.That(track.CurrentTime, Is.EqualTo(20000).Within(100));
         }