Apply fixes from StyleCI

Author: StyleCIBot

src/Illuminate/Database/Eloquent/Concerns/HasUlids.php

@@ -2,7 +2,6 @@
 
 namespace Illuminate\Database\Eloquent\Concerns;
 
-use Illuminate\Database\Eloquent\ModelNotFoundException;
 use Illuminate\Support\Str;
 
 trait HasUlids

src/Illuminate/Database/Eloquent/Concerns/HasUniqueStringIds.php

@@ -3,7 +3,6 @@
 namespace Illuminate\Database\Eloquent\Concerns;
 
 use Illuminate\Database\Eloquent\ModelNotFoundException;
-use Illuminate\Support\Str;
 
 trait HasUniqueStringIds
 {
@@ -42,7 +41,6 @@ public function uniqueIds()
         return [$this->getKeyName()];
     }
 
-
     /**
      * Retrieve the model for a bound value.
      *
@@ -93,5 +91,4 @@ public function getIncrementing()
 
         return $this->incrementing;
     }
-
 }

src/Illuminate/Database/Eloquent/Concerns/HasUuids.php

@@ -2,7 +2,6 @@
 
 namespace Illuminate\Database\Eloquent\Concerns;
 
-use Illuminate\Database\Eloquent\ModelNotFoundException;
 use Illuminate\Support\Str;
 
 trait HasUuids