Remove the ext-mongo from composer.json

composer.json

@@ -11,7 +11,6 @@
     "license" : "MIT",
     "require": {
         "php": ">=5.4.0",
-        "ext-mongo": "*",
         "illuminate/support": "4.2.*",
         "illuminate/container": "4.2.*",
         "illuminate/database": "4.2.*",