snet: remove goconvey

[karampok]

Contributes #3016

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This change is 

[oncilla]

Reviewed 5 of 5 files at r1.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @karampok)

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go/lib/snet/addr_test.go, line 44 at r1 (raw file):

		{address: &Addr{IA: ia, Host: host6}, result: "1-ff00:0:320,[2001::1]:20000"},
	}
	t.Run("Method String", func(t *testing.T) {

drop

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go/lib/snet/addr_test.go, line 108 at r1 (raw file):

		},
	}
	t.Run("Function AddrFromString", func(t *testing.T) {

drop

[karampok]

Reviewable status: 4 of 5 files reviewed, 2 unresolved discussions (waiting on @oncilla)

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go/lib/snet/addr_test.go, line 44 at r1 (raw file):

Previously, Oncilla wrote…

drop

Done.

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go/lib/snet/addr_test.go, line 108 at r1 (raw file):

Previously, Oncilla wrote…

drop

Done.

[oncilla]

Reviewed 1 of 1 files at r2.
Reviewable status: complete! all files reviewed, all discussions resolved