Revert "Updated volume rocker assets for ring notification icon"

This reverts commit 56505a6e7983d03b051d451d6120f29ccce8e09e
diff --git a/core/res/res/drawable-hdpi/ic_audio_ring_notif.png b/core/res/res/drawable-hdpi/ic_audio_ring_notif.png
index c4e76a0..a89f45f 100644
--- a/core/res/res/drawable-hdpi/ic_audio_ring_notif.png
+++ b/core/res/res/drawable-hdpi/ic_audio_ring_notif.png
Binary files differ
diff --git a/core/res/res/drawable-mdpi/ic_audio_ring_notif.png b/core/res/res/drawable-mdpi/ic_audio_ring_notif.png
index 6928d9b..1ce4f52 100644
--- a/core/res/res/drawable-mdpi/ic_audio_ring_notif.png
+++ b/core/res/res/drawable-mdpi/ic_audio_ring_notif.png
Binary files differ
diff --git a/core/res/res/drawable-xhdpi/ic_audio_ring_notif.png b/core/res/res/drawable-xhdpi/ic_audio_ring_notif.png
index d9c87e8..0df1934 100644
--- a/core/res/res/drawable-xhdpi/ic_audio_ring_notif.png
+++ b/core/res/res/drawable-xhdpi/ic_audio_ring_notif.png
Binary files differ