BitstampPusherService: remove ReconnectService

ReconnectService was instantiated but never used. On my platform it caused the application to hang on exit. I suspect the Timer or TimerTask within that class is the culprit.
Commenting the instantiation solved the hang issue on my end, with no loss of feature.
Merge pull request #678 from stephane-coulomb/patch-2

BitstampPusherService: remove ReconnectService