Removed camera error code

Removed mapping of one camera error code to a string, because the
code is not available yet in the BlackBerry NDK version 10.2.

Change-Id: I91a8adc8d915e065daccb665ce7a57236b9d1545
Reviewed-by: Wolfgang Bremer <wbremer@blackberry.com>
Reviewed-by: Rafael Roquetto <rafael.roquetto@kdab.com>
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>

src/plugins/blackberry/camera/bbcamerasession.cpp

@@ -104,8 +104,8 @@ static QString errorToString(camera_error_t error)
         return QLatin1String("Camera in power down state");
     case CAMERA_3ALOCKED:
         return QLatin1String("3A have been locked");
-    case CAMERA_EVIEWFINDERFROZEN:
-        return QLatin1String("Freeze flag set");
+//  case CAMERA_EVIEWFINDERFROZEN: // not yet available in 10.2 NDK
+//      return QLatin1String("Freeze flag set");
 #endif
     default:
         return QLatin1String("Unknown error");