dt-bindings: display: sun8i-mixer: Remove duplicated 'iommus'

Commit 13871279ff5c ("arm64: dts: allwinner: h6: Fix Cedrus IOMMU usage") introduced a double instance of 'iommus' causing the following build error with 'make dt_binding_check':

found duplicate key "iommus" with value "{}" (original value: "{}")
in "<unicode string>", line 45, column 3

Remove the double occurrence to fix this problem.

---
 .../bindings/display/allwinner,sun8i-a83t-de2-mixer.yaml       | 3 ---
 1 file changed, 3 deletions(-)

index c2fbf0b06d32..c040eef56518 100644
@@ -42,9 +42,6 @@ properties:
   resets:
     maxItems: 1
 
-  iommus:
-    maxItems: 1
-
   ports:
     type: object
     description: |

2.17.1

Hi,

Sorry for that, I've amended the original commit to move it into the proper binding.

Thanks for reporting

Maxime