Remove BMCWEB_ENABLE_REDFISH_ONE_CHASSIS

The #define BMCWEB_ENABLE_REDFISH_ONE_CHASSIS was needed as a short-term
solution for associating sensors with a single chassis on Witherspoon.

This #define is no longer needed due to a bmcweb enhancement that finds
the sensors within a chassis using ObjectMapper associations.

Tested: Built an image with this change, loaded it on a
        Witherspoon, and verified the Redfish output for Chassis,
        Power, and Thermal requests.

(From meta-openpower rev: 2ae233d116cf9ddcc8b62bd2eaf9970f23830ec6)

Change-Id: I6d4419422f911c4d928e5aa14efb3db7e1969832
signed-off-by: Shawn McCarney <shawnmm@us.ibm.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-openpower/recipes-phosphor/bmcweb/bmcweb_%.bbappend b/meta-openpower/recipes-phosphor/bmcweb/bmcweb_%.bbappend
deleted file mode 100644
index ff01b0d..0000000
--- a/meta-openpower/recipes-phosphor/bmcweb/bmcweb_%.bbappend
+++ /dev/null
@@ -1,6 +0,0 @@
-SUMMARY = "Modifications to support phosphor-inventory-manager"
-
-# No way to link sensors to a chassis for Redfish in phosphor-inventory-manager.
-# Assume just one chassis via BMCWEB_ENABLE_REDFISH_ONE_CHASSIS option. All
-# IBM systems currently have a single chassis. This is a short-term solution.
-EXTRA_OECMAKE += "-DBMCWEB_ENABLE_REDFISH_ONE_CHASSIS=ON"