staging: r8188eu: remove dev_power_down function prototype

The dev_power_down function is not present in the r8188eu driver. Remove
its prototype.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/20230111195640.306748-10-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Martin Kaiser 2023-01-11 20:56:29 +01:00 • committed by Greg Kroah-Hartman
commit 8023559769