Refactored App component to functional (#5688)
Refactored App component to functional (#5688)

* Refactored App component to functional

* Removed Component from app component

Co-authored-by: Eric Soderberg <7357255ec89aa29cb38b14d4ed1295aca420bf0b@hpe.com>
HewlettPackard/grommet,grommet/grommet,grommet/grommet,HewlettPackard/grommet,grommet/grommet,HewlettPackard/grommet