Remove unneeded type annotation

AA-Turner · AA-Turner · commit 4add50a5f0c3 · 2023-08-16T23:50:43.000+01:00
diff --git a/sphinx/ext/intersphinx.py b/sphinx/ext/intersphinx.py
@@ -718,7 +718,7 @@ class MockApp:
 
     try:
         filename = argv[0]
-        inv_data: Inventory = fetch_inventory(MockApp(), '', filename)  # type: ignore[arg-type]
+        inv_data = fetch_inventory(MockApp(), '', filename)  # type: ignore[arg-type]
         for key in sorted(inv_data or {}):
             print(key)
             inv_entries = sorted(inv_data[key].items())
