cleanup render settings #821

Job	Run time
check src/dotnet	15s
check workflow_ci	16s
check build scripts and tools	20s
check src/bindings	14s
build python sdist	17m 21s
build rhino3dm.js	13m 57s
build python 3.9 linux bdist	13m 37s
build python 3.10 linux bdist	13m 43s
build python 3.9 windows bdist	11m 37s
build python 3.10 windows bdist	11m 31s
build python 3.9 macos bdist	23m 55s
build python 3.10 macos bdist	20m 49s
build dotnet	0s
	2h 7m 35s

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