BLK-194 Removes extra poll call from WeatherUnderground.start(). RESTPolling block has since been updated to poll on start

Signed-off-by: Oren Leiman <oleiman@neutral.io>
Merge pull request #3 from nio-blocks/bug/extra_poll

BLK-194 Removes extra poll call from WeatherUnderground.start(). RESTPol...