Revert "Use a patched version of orchestra/testbench"

This reverts commit 4ecb5ca.

Author: GrahamCampbell

composer.json

@@ -9,12 +9,6 @@
             "email": "[email protected]"
         }
     ],
-    "repositories": [
-        {
-            "type": "vcs",
-            "url": "https://github.com/GrahamCampbell/testbench"
-        }
-    ],
     "require": {
         "php": ">=5.4.7",
         "illuminate/filesystem": "~5.0",
@@ -25,7 +19,6 @@
         "mrclay/minify": "~2.2"
     },
     "require-dev": {
-        "orchestra/testbench": "dev-fix-logging as 3.0.x-dev",
         "graham-campbell/testbench": "~2.0"
     },
     "autoload": {