[Cleanup] Optimize import statements

Author: lindyhopchris

tests/dummy/app/JsonApi/V1/Images/ImageSchema.php

@@ -23,7 +23,6 @@
 use LaravelJsonApi\Eloquent\Contracts\Paginator;
 use LaravelJsonApi\Eloquent\Fields\DateTime;
 use LaravelJsonApi\Eloquent\Fields\ID;
-use LaravelJsonApi\Eloquent\Fields\Relations\BelongsToMany;
 use LaravelJsonApi\Eloquent\Fields\Str;
 use LaravelJsonApi\Eloquent\Filters\WhereIn;
 use LaravelJsonApi\Eloquent\Pagination\PagePagination;