vscode settings: get rid of 90 column mark. #207

Job	Run time
miri	2m 8s
build (ubuntu, stable, locked, true)	1h 10m 38s
no_std	36s
build (windows, stable, locked, false)	14m 59s
build (macos, stable, locked, false)	19m 52s
build (ubuntu, nightly, locked, false)	39m 16s
build (ubuntu, beta, locked, false)	9m 20s
build (ubuntu, stable, latest, false)	25m 13s
build (ubuntu, stable, minimal, false)	4m 2s
fuzz	17m 42s
deploy	8s
	3h 23m 54s

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