memory: da8xx-ddrctl: Remove unused 'node' variable

The variable 'node' is not used.  Remove it to silence compile warning:

    drivers/memory/da8xx-ddrctl.c: In function 'da8xx_ddrctl_probe':
    drivers/memory/da8xx-ddrctl.c:105:22: warning: variable 'node' set but not used [-Wunused-but-set-variable]
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

drivers/memory/da8xx-ddrctl.c

@@ -102,14 +102,12 @@ static int da8xx_ddrctl_probe(struct platform_device *pdev)
 {
 	const struct da8xx_ddrctl_config_knob *knob;
 	const struct da8xx_ddrctl_setting *setting;
-	struct device_node *node;
 	struct resource *res;
 	void __iomem *ddrctl;
 	struct device *dev;
 	u32 reg;
 
 	dev = &pdev->dev;
-	node = dev->of_node;
 
 	setting = da8xx_ddrctl_get_board_settings();
 	if (!setting) {