devicetree: Drop dummy root_dev ops

This is just dead code.

Should we decide that we want some of these calls made, they would
be implemented in the mainboard context.

Change-Id: I1f097c8da722f3afab9aa1c80b96590c7ca457d5
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8532
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/include/device/device.h

@@ -173,8 +173,6 @@ void dev_finalize_chips(void);
 int reset_bus(struct bus *bus);
 unsigned int scan_bus(struct device *bus, unsigned int _max);
 void assign_resources(struct bus *bus);
-void enumerate_static_device(void);
-void enumerate_static_devices(void);
 const char *dev_name(device_t dev);
 const char *dev_path(device_t dev);
 u32 dev_path_encode(device_t dev);