Remove deprecated verticalBar layout in Overview

Removes code that was intended for a now-deprecated layout style in Overview. See ag/18386646 for an example of an issue caused by this.

Bug: 232298587
Test: Manual on 3 devices
Change-Id: Icfd40e1e5a99cf5821b1c46357db58a31daaa835
diff --git a/src/com/android/launcher3/DeviceProfile.java b/src/com/android/launcher3/DeviceProfile.java
index 5152217..1e3aa0d 100644
--- a/src/com/android/launcher3/DeviceProfile.java
+++ b/src/com/android/launcher3/DeviceProfile.java
@@ -411,10 +411,7 @@
         overviewTaskIconDrawableSizeGridPx =
                 res.getDimensionPixelSize(R.dimen.task_thumbnail_icon_drawable_size_grid);
         overviewTaskThumbnailTopMarginPx = overviewTaskIconSizePx + overviewTaskMarginPx * 2;
-        // In vertical bar, use the smaller task margin for the top regardless of mode.
-        overviewActionsTopMarginPx = isVerticalBarLayout()
-                ? overviewTaskMarginPx
-                : res.getDimensionPixelSize(R.dimen.overview_actions_top_margin);
+        overviewActionsTopMarginPx = res.getDimensionPixelSize(R.dimen.overview_actions_top_margin);
         overviewPageSpacing = res.getDimensionPixelSize(R.dimen.overview_page_spacing);
         overviewActionsButtonSpacing = res.getDimensionPixelSize(
                 R.dimen.overview_actions_button_spacing);