Refactor to remove slices and environments, replace with instances.

app/Providers/AppServiceProvider.php

@@ -4,12 +4,11 @@ namespace App\Providers;
 
 use App\Models\Application;
 use App\Models\Deployment;
-use App\Models\Environment;
+use App\Models\Instance;
 use App\Models\Organisation;
 use App\Models\OrganisationUser;
 use App\Models\Server;
 use App\Models\Service;
-use App\Models\Slice;
 use App\Models\Step;
 use App\Models\User;
 use Illuminate\Database\Eloquent\Relations\Relation;
@@ -33,12 +32,11 @@ class AppServiceProvider extends ServiceProvider
         Relation::enforceMorphMap([
             'application' => Application::class,
             'deployment' => Deployment::class,
-            'environment' => Environment::class,
+            'instance' => Instance::class,
             'organisation' => Organisation::class,
             'organisation-user' => OrganisationUser::class,
             'server' => Server::class,
             'service' => Service::class,
-            'slice' => Slice::class,
             'step' => Step::class,
             'user' => User::class,
         ]);