Revert "tacoma: Build a wic image"

This reverts commit 09415220c11012635c5de3e9e70ef17d1956ecc4.

The layout of the wks file is still being worked out.

(From meta-ibm rev: fea65fe4cf652ea9d207d114bc5be9cac4c5533a)

Change-Id: I91e8b1b6397f090578b8cd548c0035616666477a
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/meta-ibm/meta-witherspoon/conf/machine/witherspoon-tacoma.conf b/meta-ibm/meta-witherspoon/conf/machine/witherspoon-tacoma.conf
index 774f127..4d94d9e 100644
--- a/meta-ibm/meta-witherspoon/conf/machine/witherspoon-tacoma.conf
+++ b/meta-ibm/meta-witherspoon/conf/machine/witherspoon-tacoma.conf
@@ -2,9 +2,7 @@
 UBOOT_MACHINE = "ast2600_openbmc_defconfig"
 UBOOT_DEVICETREE = "ast2600-tacoma"
 
-IMAGE_FSTYPES += "wic.xz mmc-ext4-tar"
-KERNEL_IMAGETYPES += "zImage"
-IMAGE_BOOT_FILES = "zImage ${KERNEL_DEVICETREE};aspeed-bmc.dtb"
+IMAGE_FSTYPES += "ext4 mmc-ext4-tar"
 
 OBMC_POWER_SUPPLY_INSTANCES = "0 1"