parisc: Drop duplicate kgdb_pdc console

The kgdb console is already implemented and registered in pdc_cons.c,
so the duplicate code can be dropped.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org> # 6.1+

arch/parisc/kernel/kgdb.c

@@ -208,23 +208,3 @@ int kgdb_arch_handle_exception(int trap, int signo,
 	}
 	return -1;
 }
-
-/* KGDB console driver which uses PDC to read chars from keyboard */
-
-static void kgdb_pdc_write_char(u8 chr)
-{
-	/* no need to print char. kgdb will do it. */
-}
-
-static struct kgdb_io kgdb_pdc_io_ops = {
-	.name		= "kgdb_pdc",
-	.read_char	= pdc_iodc_getc,
-	.write_char	= kgdb_pdc_write_char,
-};
-
-static int __init kgdb_pdc_init(void)
-{
-	kgdb_register_io_module(&kgdb_pdc_io_ops);
-	return 0;
-}
-early_initcall(kgdb_pdc_init);