Add shy-latn and szy

Shawiya/Tacawit and Sakizaya. Both have wikiprojects that are live, and their
omission from language-data makes it impossible to find them with the ULS.

data/langdb.yaml

@@ -13,7 +13,6 @@ languages:
   aeb-latn: [Latn, [AF], Tûnsî]
   af: [Latn, [AF], Afrikaans]
   ahr: [Deva, [AS], अहिराणी]
-  ais: [Latn, [AS], Sakizaya]
   ak: [Latn, [AF], Akan]
   akz: [Latn, [AM], Albaamo innaaɬiilka]
   aln: [Latn, [EU], Gegë]