imx-vpu: remove now-redundant ccache handling

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Reviewed-by: Romain Naour <romain.naour@openwide.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/freescale-imx/imx-vpu/imx-vpu.mk

@@ -13,7 +13,7 @@ IMX_VPU_INSTALL_STAGING = YES
 IMX_VPU_MAKE_ENV = \
 	$(TARGET_MAKE_ENV) \
 	$(TARGET_CONFIGURE_OPTS) \
-	CROSS_COMPILE="$(CCACHE) $(TARGET_CROSS)" \
+	CROSS_COMPILE="$(TARGET_CROSS)" \
 	PLATFORM=$(BR2_PACKAGE_FREESCALE_IMX_PLATFORM)
 
 IMX_VPU_LICENSE = Freescale Semiconductor Software License Agreement