lnwire: update node alias type to respect utf8, use full 32 bytes

lnwire/node_announcement_test.go

@@ -1,16 +0,0 @@
-package lnwire
-
-import "testing"
-
-func TestValidateAlias(t *testing.T) {
-	t.Parallel()
-
-	aliasStr := "012345678901234567890"
-	alias := NewAlias(aliasStr)
-	if err := alias.Validate(); err != nil {
-		t.Fatalf("alias was invalid: %v", err)
-	}
-	if aliasStr != alias.String() {
-		t.Fatalf("aliases don't match")
-	}
-}