ipq40xx: Remove SUPPORTED_DEVICES for A42

The SUPPORTED_DEVICES will be defined automatically via Device/Default in
ipq40xx.

Signed-off-by: Sven Eckelmann <[email protected]>

target/linux/ipq40xx/image/Makefile

@@ -106,7 +106,6 @@ define Device/openmesh_a42
 	$(call Device/FitImageLzma)
 	DEVICE_DTS := qcom-ipq4018-a42
 	BLOCKSIZE := 64k
-	SUPPORTED_DEVICES := openmesh,a42
 	DEVICE_TITLE := OpenMesh A42
 	KERNEL = kernel-bin | lzma | fit lzma $$(DTS_DIR)/$$(DEVICE_DTS).dtb | pad-to $$(BLOCKSIZE)
 	IMAGE_SIZE := 15616k