scsi: ufs: dt-bindings: samsung,exynos: Drop unneeded quotes

Clean up 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/20230609140651.64488-1-krzysztof.kozlowski@linaro.orgAcked-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Documentation/devicetree/bindings/ufs/samsung,exynos-ufs.yaml

@@ -54,7 +54,7 @@ properties:
     const: ufs-phy
 
   samsung,sysreg:
-    $ref: '/schemas/types.yaml#/definitions/phandle-array'
+    $ref: /schemas/types.yaml#/definitions/phandle-array
     description: Should be phandle/offset pair. The phandle to the syscon node
                  which indicates the FSYSx sysreg interface and the offset of
                  the control register for UFS io coherency setting.