Documentation: power: Drop reference to interface.rst

It has been merged into sleep-states.rst.

Fixes: c21502e ("Documentation: admin-guide: PM: Update sleep states documentation")
Signed-off-by: Jonathan Neuschäfer <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>

Author: neuschaefer

Documentation/power/index.rst

@@ -13,7 +13,6 @@ Power Management
     drivers-testing
     energy-model
     freezing-of-tasks
-    interface
     opp
     pci
     pm_qos_interface