Remove the comment from test func of username-by-id

The comment no longer makes sense for the unit-test func
Test_UsernameByID. It was copied over by mistake.

Author: ScriptMang

internal/posts/posts_test.go

@@ -55,9 +55,6 @@ func Test_UsernameByID(t *testing.T) {
 	defer pool.Close()
 
 	testutils.ResetAndTestTx(t, pool, func(ctx context.Context, tx pgx.Tx) {
-
-		// before insert need to encrypt password, but it’s a private func
-		// meaning i need to create an acct object
 		dummyAcct := accts.Account{
 			Fname:    "demo",
 			Lname:    "man",