remove some verbose logging

src/org/thoughtcrime/securesms/ApplicationContext.java

@@ -91,13 +91,11 @@ public class ApplicationContext extends MultiDexApplication implements Dependenc
   @Override
   public void onStart(@NonNull LifecycleOwner owner) {
     isAppVisible = true;
-    Log.i(TAG, "App is now visible.");
   }
 
   @Override
   public void onStop(@NonNull LifecycleOwner owner) {
     isAppVisible = false;
-    Log.i(TAG, "App is no longer visible.");
     ScreenLockUtil.shouldLockApp = true;
   }
 

src/org/thoughtcrime/securesms/ConversationActivity.java

@@ -259,7 +259,6 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
           @Override
           public void onSuccess(Boolean result) {
             if (result != null && result) {
-              Log.i(TAG, "Finished loading draft");
               Util.runOnMain(() -> {
                 if (fragment != null && fragment.isResumed()) {
                   fragment.moveToLastSeen();

src/org/thoughtcrime/securesms/ConversationFragment.java

@@ -218,7 +218,6 @@ public class ConversationFragment extends Fragment
 
   public void moveToLastSeen() {
     if (lastSeen <= 0) {
-      Log.i(TAG, "No need to move to last seen.");
       return;
     }