Simplify & fix from_server_id usage

app/src/main/java/org/thoughtcrime/securesms/ApplicationContext.java

@@ -205,11 +205,11 @@ public class ApplicationContext extends MultiDexApplication implements Dependenc
                 contactDB.setContact(contact);
             }
         }
-
         if (poller != null) {
             poller.setCaughtUp(false);
         }
         startPollingIfNeeded();
+        
         OpenGroupManager.INSTANCE.setAllCaughtUp(false);
         OpenGroupManager.INSTANCE.startPolling();
     }

app/src/main/java/org/thoughtcrime/securesms/loki/activities/HomeActivity.kt

@@ -66,8 +66,6 @@ class HomeActivity : PassphraseRequiredActionBarActivity(),
     // region Lifecycle
     override fun onCreate(savedInstanceState: Bundle?, isReady: Boolean) {
         super.onCreate(savedInstanceState, isReady)
-        // Check when Session was last opened
-        setPollingLimit();
         // Double check that the long poller is up
         (applicationContext as ApplicationContext).startPollingIfNeeded()
         // Set content view
@@ -192,15 +190,6 @@ class HomeActivity : PassphraseRequiredActionBarActivity(),
         super.onDestroy()
         EventBus.getDefault().unregister(this)
     }
-
-    fun setPollingLimit() {
-        val lastTimeSessionOpened = TextSecurePreferences.getLastTimeSessionOpened(this)
-        val timeSinceLastTimeOpen = System.currentTimeMillis() - lastTimeSessionOpened
-
-        // activate polling limit on open groups if the app hasn't been opened for more than the duration set in MAX_INACTIVITY_PERIOD
-        TextSecurePreferences.setOpenGroupPollingLimit(this, timeSinceLastTimeOpen > OpenGroupPollerV2.maxInactivityPeriod)
-        TextSecurePreferences.setLastTimeSessionOpened(this)
-    }
     // endregion
 
     // region Updating