Update all set page navigations settings button callback

Updated the all set page navigation settings button callback to allow going back to the all set page.

Fixes: 256998811
Test: going to the navigation settings then swiping home/going to another app does not allow the user to then go back to all set page. going to navigation settings then going back sends the user back to all set page
Change-Id: I502e2264886c43fe15bed3fab3a241e9713c5da5
diff --git a/quickstep/src/com/android/quickstep/interaction/AllSetActivity.java b/quickstep/src/com/android/quickstep/interaction/AllSetActivity.java
index 8ad17cb..83dd1ad 100644
--- a/quickstep/src/com/android/quickstep/interaction/AllSetActivity.java
+++ b/quickstep/src/com/android/quickstep/interaction/AllSetActivity.java
@@ -135,7 +135,6 @@
             } catch (URISyntaxException e) {
                 Log.e(LOG_TAG, "Failed to parse system nav settings intent", e);
             }
-            finish();
         });
 
         findViewById(R.id.hint).setAccessibilityDelegate(new SkipButtonAccessibilityDelegate());