chore(i18n): drop unregistered ckb-IR catalog

Crowdin shipped an empty Central Kurdish (ckb-IR) catalog with no translated
strings. The locale is not registered in the Lingui config or locale schema,
so remove the file and its PDF section title entry.

packages/pdf/src/section-title-catalog.json

@@ -111,22 +111,6 @@
 		"References": "Referències",
 		"Cover Letter": "Carta de presentació"
 	},
-	"ckb-IR": {
-		"Summary": "Summary",
-		"Profiles": "Profiles",
-		"Experience": "Experience",
-		"Education": "Education",
-		"Projects": "Projects",
-		"Skills": "Skills",
-		"Languages": "Languages",
-		"Interests": "Interests",
-		"Awards": "Awards",
-		"Certifications": "Certifications",
-		"Publications": "Publications",
-		"Volunteer": "Volunteer",
-		"References": "References",
-		"Cover Letter": "Cover Letter"
-	},
 	"cs-CZ": {
 		"Summary": "Souhrn",
 		"Profiles": "Profily",