cairo: Get rid of useless parameter 'y' to xr_layout_cell_text().
[pspp] / src /
drwxr-xr-x   ..
-rw-r--r-- 1660 automake.mk
drwxr-xr-x - data
drwxr-xr-x - language
drwxr-xr-x - libpspp
drwxr-xr-x - math
drwxr-xr-x - output
drwxr-xr-x - ui