replace Pi::GetScrAspect with Graphics::Renderer::GetDisplayAspect
replace GetScr{Width,Height} with Graphics::GetScreen{Width,Height}

GetScr{Width,Height} were removed ages ago, but one reference to them
remained in a piece of code that's been disabled for even longer.
don't assume the display size is the configured size during Renderer init
remove Graphics::settings, which is never used