dts: bindings: video: dcmi: remove the dma in board dts example

With the addition of the dma property within the soc dtsi, it is
no more necessary to add it within the board dts.

Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
diff --git a/dts/bindings/video/st,stm32-dcmi.yaml b/dts/bindings/video/st,stm32-dcmi.yaml
index 89940a3..85efc89 100644
--- a/dts/bindings/video/st,stm32-dcmi.yaml
+++ b/dts/bindings/video/st,stm32-dcmi.yaml
@@ -15,9 +15,6 @@
                   &dcmi_d0_pc6 &dcmi_d1_pc7 &dcmi_d2_pe0 &dcmi_d3_pe1
                   &dcmi_d4_pe4 &dcmi_d5_pd3 &dcmi_d6_pe5 &dcmi_d7_pe6>;
       pinctrl-names = "default";
-      dmas = <&dma1 0 75 (STM32_DMA_PERIPH_TO_MEMORY | STM32_DMA_PERIPH_NO_INC |
-              STM32_DMA_MEM_INC | STM32_DMA_PERIPH_8BITS | STM32_DMA_MEM_32BITS |
-              STM32_DMA_PRIORITY_HIGH) STM32_DMA_FIFO_1_4>;
 
       port {
         dcmi_ep_in: endpoint {