MM-43341: Skip TestImportImportUser (#19970)

* MM-43341: Skip TestImportImportUser

https://mattermost.atlassian.net/browse/MM-43341

```release-note
NONE
```

* ignore lint

```release-note
NONE
```

app/import_functions_test.go

@@ -704,6 +704,7 @@ func TestImportImportChannel(t *testing.T) {
 }
 
 func TestImportImportUser(t *testing.T) {
+	t.Skip("MM-43341")
 	th := Setup(t)
 	defer th.TearDown()
 

app/import_test.go

@@ -52,6 +52,7 @@ func checkPreference(t *testing.T, a *App, userID string, category string, name
 	require.Truef(t, found, "Did not find preference for user %v in category %v with name %v", userID, category, name)
 }
 
+//nolint:unused
 func checkNotifyProp(t *testing.T, user *model.User, key string, value string) {
 	actual, ok := user.NotifyProps[key]
 	require.True(t, ok, "Notify prop %v not found. User: %v", key, user.Id)