ipq806x: drop ubifs support

Ubifs is disabled for all boards except the evaluation boards and the
Fritz!Box 4040 anyway. According the author, the ubifs support for the
Fritz!Box 4040 wasn't enabled on purpose.

Signed-off-by: Mathias Kresin <dev@kresin.me>

target/linux/ipq806x/Makefile

@@ -5,7 +5,7 @@ include $(TOPDIR)/rules.mk
 ARCH:=arm
 BOARD:=ipq806x
 BOARDNAME:=Qualcomm Atheros IPQ806X
-FEATURES:=squashfs nand ubifs fpu
+FEATURES:=squashfs nand fpu
 CPU_TYPE:=cortex-a15
 CPU_SUBTYPE:=neon-vfpv4
 MAINTAINER:=John Crispin <john@phrozen.org>

target/linux/ipq806x/image/Makefile

@@ -3,8 +3,6 @@
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
-UBIFS_OPTS = -m 2048 -e 124KiB -c 4096 -U -F
-
 define Device/Default
 	PROFILES := Default
 	KERNEL_DEPENDS = $$(wildcard $(DTS_DIR)/$$(DEVICE_DTS).dts)
@@ -42,7 +40,6 @@ define Device/UbiFit
 endef
 
 define Device/DniImage
-	FILESYSTEMS := squashfs
 	KERNEL_SUFFIX := -uImage
 	KERNEL = kernel-bin | append-dtb | uImage none
 	KERNEL_NAME := zImage
@@ -56,7 +53,6 @@ endef
 DEVICE_VARS += NETGEAR_BOARD_ID NETGEAR_HW_ID
 
 define Device/TpSafeImage
-	FILESYSTEMS := squashfs
 	KERNEL_SUFFIX := -uImage
 	KERNEL = kernel-bin | append-dtb | uImage none
 	KERNEL_NAME := zImage
@@ -68,7 +64,6 @@ endef
 DEVICE_VARS += TPLINK_BOARD_ID
 
 define Device/ZyXELImage
-	FILESYSTEMS := squashfs
 	KERNEL_SUFFIX := -uImage
 	KERNEL = kernel-bin | append-dtb | uImage none | pad-to $${KERNEL_SIZE}
 	KERNEL_NAME := zImage
@@ -99,7 +94,6 @@ define Device/linksys_ea8500
 	PAGESIZE := 2048
 	BLOCKSIZE := 128k
 	KERNEL_SIZE := 3072k
-	FILESYSTEMS := squashfs
 	KERNEL = kernel-bin | append-dtb | uImage none | append-uImage-fakeroot-hdr
 	BOARD_NAME := ea8500
 	SUPPORTED_DEVICES += ea8500
@@ -173,7 +167,6 @@ TARGET_DEVICES += netgear_r7800
 
 define Device/openmesh_a42
 	$(call Device/FitImageLzma)
-	FILESYSTEMS := squashfs
 	DEVICE_DTS := qcom-ipq4019-a42
 	KERNEL_LOADADDR := 0x80208000
 	BLOCKSIZE := 64k
@@ -196,7 +189,6 @@ define Device/qcom_ap-dk01.1-c1
 	KERNEL_INSTALL := 1
 	KERNEL_SIZE := 4096k
 	IMAGE_SIZE := 26624k
-	FILESYSTEMS := squashfs
 	$(call Device/FitImage)
 	IMAGES := sysupgrade.bin
 	IMAGE/sysupgrade.bin := append-kernel | pad-to $$$${KERNEL_SIZE} | append-rootfs | pad-rootfs | append-metadata
@@ -269,7 +261,6 @@ endef
 TARGET_DEVICES += tplink_c2600
 
 define Device/tplink_vr2600v
-	FILESYSTEMS := squashfs
 	KERNEL_SUFFIX := -uImage
 	KERNEL = kernel-bin | append-dtb | uImage none
 	KERNEL_NAME := zImage