* Remove all inbox notifications about cart and checkout blocks
* Remove feature flag check from CreateAccount class
* Remove feature plugin check to register PaymentsApi class
* Comment out is_feature_plugin_build function
We might need this later, so keeping it around seems useful.
* Remove feature plugin check when adding resource hints
* Import registerBlockType and use it over registerFeaturePLuginBlockType
* Ensure Cart and Checkout inner blocks register even if not feature plugin
* Comment out registerFeaturePluginBlockType
* Remove duplicate import
* Revert "Comment out registerFeaturePluginBlockType"
This reverts commit bec6ed899b68e26e836bde1c573d6066fb2bcc47.
* Align PHPDoc correctly
* Update feature flag doc to remove Cart and Checkout blocks + PaymentApi
Niels Lange
Thomas Roberts
Seghir Nadir