MAGETWO-32900: Move Magento_Core Cookie Code To Magento_Cookie

- Moved Backend dependency to suggest

Author: anupdugar

app/code/Magento/Cookie/composer.json

@@ -4,7 +4,6 @@
     "require": {
         "php": "~5.4.11|~5.5.0|~5.6.0",
         "magento/module-store": "0.42.0-beta5",
-        "magento/module-backend": "0.42.0-beta5",
         "magento/framework": "0.42.0-beta5",
         "magento/magento-composer-installer": "*"
     },