rge: remove dead code left over from the OpenBSD import

[chris.longros_gmail.com]

Summary

Remove several #if 0 blocks that have been dead since the initial import:

• rge_activate() forward declaration and function body, which used OpenBSD's DVACT_POWERDOWN / struct device API
• WOL forward declarations guarded by #ifndef SMALL_KERNEL, an OpenBSD-specific conditional that does not apply to FreeBSD
• Commented-out PCI Express capability code that used OpenBSD's pci_get_capability() / pci_conf_read() API

None of this code could compile on FreeBSD.

Signed-off-by: Christos Longros <[e-mail]>

[adrian]

It's in here just in case i need it when figuring out WOL. I'd much prefer we figure out WOL :P

[chris.longros_gmail.com]

In D55744#1275499, @adrian wrote:

It's in here just in case i need it when figuring out WOL. I'd much prefer we figure out WOL :P

Yeah, I thought so ...