rm simultaneous only-data & only-headercheck

Author: Ghesselink

__main__.py

@@ -11,9 +11,6 @@ def main():
     parser.add_argument("--only-header", action="store_true", help="Validate only the header section.")
 
     args = parser.parse_args()
-    if args.only_header:
-        print("Cannot use both --only-header and --only-data at the same time", file=sys.stderr)
-        sys.exit(2)
 
     try:
         parse(