aspeed: Remove duplicate kernel provider

virtual/kernel was specified twice in the common Aspeed configuration.

Change-Id: I808d5359fbfb8986c6b194dc5c0a8dc1e5268999
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-openbmc-bsp/meta-aspeed/conf/machine/include/aspeed.inc b/meta-openbmc-bsp/meta-aspeed/conf/machine/include/aspeed.inc
index 06d868f..4990e1a 100644
--- a/meta-openbmc-bsp/meta-aspeed/conf/machine/include/aspeed.inc
+++ b/meta-openbmc-bsp/meta-aspeed/conf/machine/include/aspeed.inc
@@ -2,7 +2,6 @@
 
 ASPEED_UBOOT_VERSION ?= "v2016.07+git%"
 
-PREFERRED_PROVIDER_virtual/kernel ?= "linux-obmc"
 PREFERRED_PROVIDER_virtual/bootloader ?= "u-boot"
 PREFERRED_VERSION_u-boot ?= "${ASPEED_UBOOT_VERSION}"
 PREFERRED_VERSION_u-boot-fw-utils ?= "${ASPEED_UBOOT_VERSION}"