removing account number
removing account number

Removed account number because a new method gets account number from API to make setup easier for new users.
dirwin517/robinhood,shaunstanislaus/robinhood,Milstein/robinhood,lacunadream/robinhood,gnagel/robinhood,github4ry/robinhood,stevemcquaid/robinhood,bussiere/robinhood,JGrauPirozzi/robinhood