version: remove URL and email address from the --version output

Web links and email addresses do not belong in the version information.
This has bothered me for a long time.  The URL is in the man page, and
bug reports should go to Savannah.

src/nano.c

@@ -663,7 +663,6 @@ void version(void)
 #ifndef NANO_TINY
 	printf(" (C) 1999-2011, 2013-2020 Free Software Foundation, Inc.\n");
 	printf(_(" (C) 2014-%s the contributors to nano\n"), "2020");
-	printf(_(" Email: nano@nano-editor.org	Web: https://nano-editor.org/\n"));
 #endif
 	printf(_(" Compiled options:"));