You don't need to translate the word "Delete" either. Automatic translation can trivially deal with that.
More broadly, unless your pictograms are very clear (e.g. IKEA) then it's still better to add text because then at least the information is there.
I can't count the number of instruction manuals I've read where the authors have clearly thought they were IKEA and could avoid using text, only to make incomprehensible diagrams that confuse more than help. If only they had used text in any language! I don't care if it's Swahili, at least then I would be able to translate it.
