OpenGL 4 deprecated

[daniekpo]

OpenGL 4 has been deprecated in 4.23 and removed in 4.24. We might need to remove the -opengl flag from the python side when we're launching the holodeck-engine. It failed to start up for me on version 4.24. I had to go to UnrealEngine/Engine/Config/BaseEngine.ini and uncomment +TargetedRHIs=GLSL_430. There's a deprecation warning right above that line (2060)

[jaydenmilne]

FWIW, I don't even know why we have this option. We should ask the wise sages who came before us why it exists