Remove base model change instructions from docs

Removed instructions for changing the base model in the publishing configuration documentation.

Author: rmcdaniel

docs/configuration/publishing-config.md

@@ -41,22 +41,6 @@ In the `workflows.php` config file you can update the model classes to use your
 'stored_workflow_timer_model' => App\Models\StoredWorkflowTimer::class,
 ```
 
-## Changing Base Model
-
-By default, the workflow models extend `Illuminate\Database\Eloquent\Model` but some packages like https://github.com/mongodb/laravel-mongodb require you to extend their model, such as in this example, `MongoDB\Laravel\Eloquent\Model`.
-
-This can be changed by updating the `base_model` setting.
-
-```php
-'base_model' => Illuminate\Database\Eloquent\Model::class,
-```
-
-It should now look like this.
-
-```php
-'base_model' => MongoDB\Laravel\Eloquent\Model::class,
-```
-
 ## Changing Serializer
 
 This setting allows you to optionally use the Base64 serializer instead of Y (kind of like yEnc encoding where it only gets rid of null bytes). The tradeoff is between speed and size. Base64 is faster but adds more overhead. Y is slower but a lot smaller. If you change this it will only affect new workflows and old workflows will revert to whatever they were encoded with to ensure compatibility.