e2fsprogs: remove libintl static linking handling

We no longer support building the full-blown libintl in static linking
scenarios, as it causes too many problems. Therefore, remove the
special code in e2fsprogs that was handling this.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>