Hope that you can see the picture in my scenario, I want to delete the phrase 'You have x changes in this row' in Row Editing.
I have been looking into your question and in order to change the row edit text, my suggestion is to retemplate it based on your requirement using the igxRowEditText directive. This way you could remove or change the displayed text.
Here could be found my sample for your reference. Please test it on your side and let me know if I may be of any further assistance.Additionally, here could be found a topic regarding Grid Row Editing that you might consider useful.
Sincerely,Teodosia HristodorovaAssociate Software Developer