iOS: fix compilation as we deploy the crash-reporting-only variant of Hockey

(cherry picked from commit 7d57500084f46a23fcefd9a6c834fa04ee1fc16f)

Sources/VLCAppDelegate.m

@@ -93,14 +93,11 @@ NSString *const VLCDropboxSessionWasAuthorized = @"VLCDropboxSessionWasAuthorize
     [hockeyManager configureWithBetaIdentifier:@"0114ca8e265244ce588d2ebd035c3577"
                                 liveIdentifier:@"c95f4227dff96c61f8b3a46a25edc584"
                                       delegate:nil];
+    [hockeyManager startManager];
 
     // Configure Dropbox
     [DBClientsManager setupWithAppKey:kVLCDropboxAppKey];
 
-    // Configure the SDK in here only!
-    [hockeyManager startManager];
-    [hockeyManager.authenticator authenticateInstallation];
-
     /* listen to validation notification */
     [[NSNotificationCenter defaultCenter] addObserver:self
                                              selector:@selector(passcodeWasValidated:)