Remove experimental banner from direct mesh access

Author: fsimonis

pages/docs/couple-your-code/couple-your-code-direct-access.md

@@ -7,10 +7,6 @@ summary: "You can access received meshes and their data directly by using specif
 
 <!-- TODO: needs update -->
 
-{% warning %}
-These API functions are work in progress, experimental, and are not yet released. The API might change during the ongoing development process. Use with care.
-{% endwarning %}
-
 This concept is required if you want to access received meshes directly. It might be relevant in case you don't want to use the mapping schemes in preCICE, but rather want to use your own solver for data mapping. As opposed to the usual preCICE mapping, only a single mesh (from the other participant) is now involved in this situation since an 'own' mesh defined by the participant itself is not required any more. In order to re-partition the received mesh, the participant needs to define the mesh region it wants read data from and write data to. The complete concept on the receiving participant looks as follows:
 
 ```cpp