Remove flags ENABLE_TWO_PANEL_HOME  FOLDABLE_WORKSPACE_REORDE and FOLDABLE_SINGLE_PAGE

Fix: 270392643
Fix: 270395070
Fix: 270395274
Test: atest FoldableItemsIntegrity
Change-Id: I2d7af312da8aeb070588ca94a2a256d2def65eeb
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 8071ae4..c43fe99 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -44,7 +44,6 @@
 import static com.android.launcher3.LauncherState.SPRING_LOADED;
 import static com.android.launcher3.Utilities.postAsyncCallback;
 import static com.android.launcher3.accessibility.LauncherAccessibilityDelegate.getSupportedActions;
-import static com.android.launcher3.config.FeatureFlags.FOLDABLE_SINGLE_PAGE;
 import static com.android.launcher3.config.FeatureFlags.MULTI_SELECT_EDIT_MODE;
 import static com.android.launcher3.config.FeatureFlags.SHOW_DOT_PAGINATION;
 import static com.android.launcher3.logging.StatsLogManager.EventEnum;
@@ -767,7 +766,7 @@
         }
 
         onDeviceProfileInitiated();
-        if (FOLDABLE_SINGLE_PAGE.get() && mDeviceProfile.isTwoPanels) {
+        if (mDeviceProfile.isTwoPanels) {
             mCellPosMapper = new TwoPanelCellPosMapper(mDeviceProfile.inv.numColumns);
         } else {
             mCellPosMapper = CellPosMapper.DEFAULT;