Hi,
that was already a nod in the right direction.. I came up with this:
<updateModule refID="esri_core_module">
<controls>
<deleteButton refID="esri_core_newProjectButton" />
<deleteButton refID="esri_core_openProjectButton" />
<deleteButton refID="esri_core_saveProjectAsButton" />
</controls>
</updateModule>
And looking at the QAT, it worked:
But I can still create/open projects in the "project tab":
I browsed through the DAML IDs in this link: https://github.com/Esri/arcgis-pro-sdk/wiki/DAML-ID-Reference-ADCore.daml
But I couldn't figure out which ones I need to add to updateModule to get rid of new/open project in the "project tab"