Revert "[nrf noup] dts: nordic: Support disabling lfosc"

This reverts commit 3067153.

Signed-off-by: Gerard Marull-Paretas <[email protected]>

Author: gmarull

dts/bindings/misc/nordic,nrf-bicr.yaml

@@ -76,7 +76,6 @@ properties:
       - "crystal"
       - "external-sine"
       - "external-square"
-      - "disabled"
 
   lfosc-loadcap:
     type: int