Revert "Try to fix travis cairo build failure via newer Cabal and Text"

This reverts commit b9b874db3c7135f601faa82d20ecbdfe31ca4909.
To compile gtk 0.13.0.0 with old Haskell Platforms I'd have
to overwrite some of their packages, which misses the point
of testing with (and using) Haskell Platforms.
Don't use gtk 0.13 with old GHCs due to buggy deps