[libgda] Removed Polish translation

[Piotr Drąg <piotrdrag src gnome org>]

commit df19de7c9c73858cc957e0c50f8874c75e77f4d6
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sun Oct 5 17:34:06 2014 +0200

    Removed Polish translation
    
    Last updated in 2002 (that's 12 years ago) and with 36 strings translated,
    it's doing more harm than good at this point. It can always be brought back
    from git, but it's probably easier to just start from scratch, if anyone's
    interested.

 po/LINGUAS |    1 -
 po/pl.po   |12329 ------------------------------------------------------------
 2 files changed, 0 insertions(+), 12330 deletions(-)
---
diff --git a/po/LINGUAS b/po/LINGUAS
index 8abe260..ee8b550 100755
--- a/po/LINGUAS
+++ b/po/LINGUAS
@@ -33,7 +33,6 @@ ne
 nl
 oc
 pa
-pl
 pt
 pt_BR
 ro