fix(gnovm): don't print to stdout by default #5920

Job	Run time
setup	5s
Run Main (gnodev) / Go Build / generated	10s
Run Main (gnodev) / Go Test / test	1m 15s
Run Main (gnodev) / Go Linter / lint	50s
Run Main (gnofaucet) / Go Build / generated	8s
Run Main (gnofaucet) / Go Linter / lint	33s
Run Main (gnofaucet) / Go Test / test	37s
Run Main (gnogenesis) / Go Build / generated	12s
Run Main (gnogenesis) / Go Linter / lint	46s
Run Main (gnogenesis) / Go Test / test	51s
Run Main (gnokeykc) / Go Build / generated	8s
Run Main (gnokeykc) / Go Linter / lint	45s
Run Main (gnomd) / Go Build / generated	5s
Run Main (gnomd) / Go Linter / lint	35s
Run Main (gnokeykc) / Go Test / test	41s
Run Main (gnomd) / Go Test / test	27s
Run Main (gnomigrate) / Go Build / generated	7s
Run Main (gnomigrate) / Go Linter / lint	38s
Run Main (gnomigrate) / Go Test / test	45s
	9m 38s

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