Import 08eedf7f20: Put secondary camera back into deferred, rather than forward, rendering (by Caitlyn)

[daleglass]

This is an automated proposal to look at a commit made by Caitlyn and import it into Overte

Commit:	08eedf7f20539360d6222354e11b5f1eac487b18
Author:	Caitlyn
Date:	Sun, 08 Mar 2020 13:32

Put secondary camera back into deferred, rather than forward, rendering

Stats:

Filename	Stats	Lines	Added	Removed	Lines in blame
interface/src/graphics/GraphicsEngine.cpp		4	2	2	⚠ 0
1 files	-	4	2	2	0

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[daleglass]

Trivial change, disables stereo and deferred rendering. Benefit seems doubtful.