RFR: 8270839: Remove deprecated implementation methods from Scene [v2]

[Kevin Rushforth]

On 7/22/2021 6:44 AM, Ajit Ghaisas wrote:
>
> Marked as reviewed by aghaisas (Reviewer).

I'll integrate as soon as the CSR is approved (I've moved it to 
"Finalized").

(Btw, I'm replying directly to the email list to see whether Skara's 
`mlbridge` bot is working in this direction following the outage earlier 
in the week)

-- Kevin