Revert^2 "Fix text alignment in RTL mode for volume sliders"

This reverts commit 78ce35afc8.

Reason for revert: This change is not the culprit for b/367986833. The test can pass with this change: https://android-build.corp.google.com/abtd/run/L76900030006546930/

Change-Id: Ic13423f4ee7f4744526b11632edc4ee3795c4131

res/layout/preference_volume_slider.xml

@@ -42,6 +42,7 @@
                 android:layout_height="wrap_content"
                 android:layout_weight="1"
                 android:singleLine="true"
+                android:textAlignment="viewStart"
                 android:textAppearance="?android:attr/textAppearanceListItem"
                 android:ellipsize="marquee"
                 android:fadingEdge="horizontal"/>