That's true since we are losing nothing if we kept that in the file, but one good thing recently Transifex added is that file accross our webmaker project on Transifex now shared the memory which means if this string was part of other app in the same project we still going to have that saved.

I think it is fine to remove now. Unless they are really long string and there is a possibility that we will reuse them again then in that case I won't take them off.