media: exynos-gsc: remove unused improper CONFIG definition

Defines prefixed with "CONFIG" should be limited to proper Kconfig options,
that are introduced in a Kconfig file.

In the driver code, there is a define for CONFIG_VB2_GSC_DMA_CONTIG, but
this is not used anywhere in the code.

Just remove this unused definition.

No functional change.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/platform/samsung/exynos-gsc/gsc-core.h

@@ -26,7 +26,6 @@
 
 #include "gsc-regs.h"
 
-#define CONFIG_VB2_GSC_DMA_CONTIG	1
 #define GSC_MODULE_NAME			"exynos-gsc"
 
 #define GSC_SHUTDOWN_TIMEOUT		((100*HZ)/1000)