Documentation: ln8411: Removes sync function properties

Eliminates sync function related properties from the
devicetree bindings.

Change-Id: Ief11ac09c791a6c676f08cde9bce91fbeeec5cc6
Signed-off-by: Ricardo Rivera-Matos <[email protected]>

Author: rriveramcrus

Documentation/devicetree/bindings/power/supply/ln8411.yaml

@@ -194,17 +194,6 @@ properties:
     minimum: 0
     maximum: 7
 
-  cirrus,sync-function-en:
-    type: boolean
-    description: |
-      Enable parallel charging function.
-
-  cirrus,sync-main-en:
-    type: boolean
-    description: |
-      Set as primary charger in parallel charging scheme. This has no
-      effect if "cirrus,sync-function-en" is not set.
-
   cirrus,vbus-ovp-set:
     type: boolean
     description: |