Omnilib: disable usage of OMNI_NAVIGATION_BAR_SHOW

hopefully only tmp until 12.1 migration is done

Change-Id: I6bd299fc3631727c952a8c0ce0342426763b5f4a
diff --git a/src/org/omnirom/omnilib/utils/DeviceUtils.java b/src/org/omnirom/omnilib/utils/DeviceUtils.java
index 965e193..675b3e0 100644
--- a/src/org/omnirom/omnilib/utils/DeviceUtils.java
+++ b/src/org/omnirom/omnilib/utils/DeviceUtils.java
@@ -76,10 +76,10 @@
     public static boolean deviceSupportNavigationBarForUser(Context context, int userId) {
         final boolean showByDefault = context.getResources().getBoolean(
                 com.android.internal.R.bool.config_showNavigationBar);
-        final int hasNavigationBar = Settings.System.getIntForUser(
+        /*final int hasNavigationBar = Settings.System.getIntForUser(
                 context.getContentResolver(),
-                Settings.System.OMNI_NAVIGATION_BAR_SHOW, -1, userId);
-        //final int hasNavigationBar = -1;
+                Settings.System.OMNI_NAVIGATION_BAR_SHOW, -1, userId);*/
+        final int hasNavigationBar = -1;
         if (hasNavigationBar == -1) {
             String navBarOverride = SystemProperties.get("qemu.hw.mainkeys");
             if ("1".equals(navBarOverride)) {