The update and cancel text options are part of the edit command configuration so if the command is not included, the localized messages will not be available. You can include the edit command and hide the column:
or include the command to destroy command column and hide the button via CSS:
or include the kendo.messages
file in order to localize the text.
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Feedback Portal
and vote to affect the priority of the items