Remove provides from ServiceProvider

I'm pretty sure this one is only used for deferred providers [1].
However we do more then just registered services, thus with the current
Laravel architecture we can't make it deferred

[1] https://laravel.com/docs/8.x/providers#deferred-providers

Author: mfn

src/GraphQLServiceProvider.php

@@ -155,17 +155,4 @@ public function registerConsole(): void
         $this->commands(TypeMakeCommand::class);
         $this->commands(UnionMakeCommand::class);
     }
-
-    /**
-     * Get the services provided by the provider.
-     *
-     * @return array
-     */
-    public function provides()
-    {
-        return [
-            GraphQL::class,
-            'graphql',
-        ];
-    }
 }