[fidldev] Remove double invocation of fidldev

Change-Id: Ibd1249b8a7e757e7f80332425491eae0df108f0d
Reviewed-on: https://fuchsia-review.googlesource.com/c/fidl-misc/+/416254
Reviewed-by: Benjamin Prosnitz <bprosnitz@google.com>
diff --git a/fidldev/fidldev.py b/fidldev/fidldev.py
index 053334e..45c46d2 100755
--- a/fidldev/fidldev.py
+++ b/fidldev/fidldev.py
@@ -181,4 +181,3 @@
         parser.print_help(sys.stderr)
         sys.exit(1)
     func(args)
-    args.func(args)