nethsm: remove image restrictions reference from production-image

Author: daringer

source/components/nethsm/container/production-image.rst

@@ -6,9 +6,6 @@ It requires an external etcd key-value store which is connected through an encry
 The NetHSM process can be executed with hardware-based separation (KVM) and device-specific encryption.
 The image is distributed as OCI image and can be run locally with a compatible executor such as Docker and Podman.
 
-The image is subject to some feature restrictions in comparison to the NetHSM hardware.
-Please refer to chapter `Image Feature Restrictions <image-feature-restrictions.html>`__ to learn more.
-
 The NetHSM production container is a product for paying customers only and can be purchased `here <https://www.nitrokey.com/contact>`__.
 The image can be obtained from Nitrokey NetHSM registry ``https://registry.git.nitrokey.com/distribution/nethsm>`` using the credentials provided after purchase.