The Kendo UI Diagram has plenty of editable
options that allow you to configure very specific configurations at diagram level and also shapes and connection default editable options.
Since you do not wish to show the editable tools on shape click, add a shapeDefaults.editable.tools
option and set that to false:
You may wish to also remove these options from the toolbar by overriding the diagram editable tools
option at the root level:
Here is a sample Dojo for your reference for an editable Kendo UI Diagram without rotating and with non-editable connections:
Let me know if you need further information.