1bcd44223 Remove the virtual specifier for functions with the override specifier (practicalswift)
Pull request description:
Remove the `virtual` specifier for functions with the `override` specifier.
`override` implies that the function is virtual (in addition - of course - to guaranteeing that the function is overriding a virtual function from a base class).
Tree-SHA512: 2e83e1b3651f55f8f2645282114ab087ad3a0be8826f26ee5c2064d0952f677290b97261398c1d524ec7f87bbbfdbeefc141180f6099c8bbfa4c59a14f7fa755