remove comment

Author: mateusz834

src/net/dnsconfig_unix_test.go

@@ -176,7 +176,6 @@ func TestDNSReadConfig(t *testing.T) {
 	getHostname = func() (string, error) { return "host.domain.local", nil }
 
 	for _, tt := range dnsReadConfigTests {
-		// make a copy to avoid modyfying shared state
 		want := *tt.want
 		if len(want.search) == 0 {
 			want.search = dnsDefaultSearch()