Remove pre-update-cmd

Can't rely on being able to run php artisan, before updating.

Author: barryvdh

composer.json

@@ -39,10 +39,8 @@
             "php artisan clear-compiled",
             "php artisan optimize"
         ],
-        "pre-update-cmd": [
-            "php artisan clear-compiled"
-        ],
         "post-update-cmd": [
+            "php artisan clear-compiled",
             "php artisan optimize"
         ]
     },