chore: Clean up unnecessary TODOs + move test functions to a better location #2512

Job	Run time
linux (focal, 5.7)	7m 22s
apple (macos-12, Xcode_14.0.1, platform=iOS Simulator,OS=16.0,name=iPhone 13)	7m 53s
linux (focal, 5.9)	7m 27s
apple (macos-12, Xcode_14.0.1, platform=OS X)	4m 47s
linux (amazonlinux2, 5.7)	7m 1s
apple (macos-13, Xcode_15.0, platform=iOS Simulator,OS=17.0,name=iPhone 14)	5m 38s
linux (amazonlinux2, 5.9)	5m 18s
apple (macos-13, Xcode_15.0, platform=OS X)	5m 0s
	50m 26s

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