Remove the left-to-right mark from the lki autonym

This character produces a JSHint warning,
and it's definitely unnecessary.
It was possibly added as a copy-paste error in 6650db2.

data/generated-langdb.json

@@ -1836,7 +1836,7 @@
                 "AS",
                 "ME"
             ],
-            "لەکی‎"
+            "لەکی"
         ],
         "lkt": [
             "Latn",

data/langdb.yaml

@@ -291,7 +291,7 @@ languages:
   li: [Latn, [EU], Limburgs]
   lij: [Latn, [EU], Ligure]
   liv: [Latn, [EU], Līvõ kēļ]
-  lki: [Arab, [AS, ME], لەکی‎]
+  lki: [Arab, [AS, ME], لەکی]
   lkt: [Latn, [AM], Lakȟótiyapi]
   lld: [Latn, [EU], Ladin]
   lmo: [Latn, [EU], lumbaart]