[ISAPNP] remove unused isapnp_allow_dma0 modparam

It looks like this option has been moved from isapnp to resource.c,
but the MODULE_PARM line is still there:

patch from: Gerald Teschl <gt@esi.ac.at>

drivers/pnp/isapnp/core.c

@@ -64,7 +64,6 @@ MODULE_PARM(isapnp_rdp, "i");
 MODULE_PARM_DESC(isapnp_rdp, "ISA Plug & Play read data port");
 MODULE_PARM(isapnp_reset, "i");
 MODULE_PARM_DESC(isapnp_reset, "ISA Plug & Play reset all cards");
-MODULE_PARM(isapnp_allow_dma0, "i");
 MODULE_PARM(isapnp_verbose, "i");
 MODULE_PARM_DESC(isapnp_verbose, "ISA Plug & Play verbose mode");
 MODULE_LICENSE("GPL");