dt-bindings: gpu: drop unneeded quotes

Cleanup bindings dropping unneeded quotes. Once all these are fixed,
checking for this can be enabled in yamllint.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230609140738.64958-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml

@@ -86,7 +86,7 @@ properties:
     const: 2
 
   dynamic-power-coefficient:
-    $ref: '/schemas/types.yaml#/definitions/uint32'
+    $ref: /schemas/types.yaml#/definitions/uint32
     description:
       A u32 value that represents the running time dynamic
       power coefficient in units of uW/MHz/V^2. The

Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml

@@ -92,7 +92,7 @@ properties:
   dma-coherent: true
 
   dynamic-power-coefficient:
-    $ref: '/schemas/types.yaml#/definitions/uint32'
+    $ref: /schemas/types.yaml#/definitions/uint32
     description:
       A u32 value that represents the running time dynamic
       power coefficient in units of uW/MHz/V^2. The