Some code cleanup [skip ci]

app/Repositories/Budget/BudgetRepository.php

@@ -310,7 +310,6 @@ class BudgetRepository implements BudgetRepositoryInterface
     }
 
 
-
     /**
      * @param Budget $budget
      * @param array  $data

app/Repositories/Category/CategoryRepository.php

@@ -5,7 +5,6 @@ namespace FireflyIII\Repositories\Category;
 use Auth;
 use Carbon\Carbon;
 use Crypt;
-use DB;
 use FireflyIII\Models\Category;
 use FireflyIII\Models\TransactionJournal;
 use Illuminate\Database\Query\JoinClause;