Merge pull request #664 from jenssegers/analysis-XZ7NDq

Applied fixes from StyleCI

src/Jenssegers/Mongodb/Relations/MorphTo.php

 <?php namespace Jenssegers\Mongodb\Relations;
 
-use Illuminate\Database\Eloquent\Collection;
 use Illuminate\Database\Eloquent\Relations\MorphTo as EloquentMorphTo;
 
 class MorphTo extends EloquentMorphTo {