Apply fixes from StyleCI (#18)

Author: edgrosvenor

tests/Models/DefineHeadersModel.php

@@ -10,4 +10,4 @@ class DefineHeadersModel extends SheetModel
     protected $sheetId = '282825363';
     protected $headerRow = '1';
     protected $headers = ['id', 'name', 'email'];
-}
+}

tests/SheetModelTest.php

@@ -70,8 +70,6 @@ public function can_use_defined_headers()
         $sheet = DefineHeadersModel::find(1);
 
         $this->assertEquals('Ed', $sheet->name);
-
-
     }
 
     /** @test */