dt-bindings: clock: imx7ulp: remove SNVS clock

Since i.MX7ULP B0 chip, SNVS module is moved into M4
domain, so remove it from Linux clock table.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

include/dt-bindings/clock/imx7ulp-clock.h

@@ -65,7 +65,6 @@
 #define IMX7ULP_CLK_FLEXBUS		2
 #define IMX7ULP_CLK_SEMA42_1		3
 #define IMX7ULP_CLK_DMA_MUX1		4
-#define IMX7ULP_CLK_SNVS		5
 #define IMX7ULP_CLK_CAAM		6
 #define IMX7ULP_CLK_LPTPM4		7
 #define IMX7ULP_CLK_LPTPM5		8