[3.12] Remove limit in calendar CLI help message for year arg (GH-114719) (GH-114722)

The limit was removed in 66c88ce (GH-4109).
(cherry picked from commit 0f54ee4)

Co-authored-by: Steven Ward <[email protected]>

Author: miss-islington

Lib/calendar.py

@@ -739,7 +739,7 @@ def main(args):
     parser.add_argument(
         "year",
         nargs='?', type=int,
-        help="year number (1-9999)"
+        help="year number"
     )
     parser.add_argument(
         "month",