build.config.msm.common: Remove BRANCH modifications

These modifications are no longer needed. Bazel controls the output
directory and uses this variable to set the local version. When we
override BRANCH, we miss "android14-${KMI_GENERATION}" stamp from the
version string.

Change-Id: I06767b4015f4910ba7c9146c8c08280961a4cad0
Signed-off-by: Elliot Berman <quic_eberman@quicinc.com>

build.config.msm.common

@@ -11,7 +11,6 @@
 
 CONFIG_DIR=arch/${ARCH}/configs
 
-BRANCH=msm-kernel
 CONFIG_TARGET=msm.${MSM_ARCH}
 
 ################################################################################
@@ -72,14 +71,6 @@ if [ -z "${VARIANT}" ] || [ "${VARIANT}" == "default" ]; then
   VARIANT="${VARIANTS[0]}"
 fi
 
-if [ ! -z $MSM_ARCH ]; then
-  BRANCH+=-${MSM_ARCH}
-fi
-
-if [ ! -z $VARIANT ]; then
-  BRANCH+=-${VARIANT}
-fi
-
 if ( for v in "${VARIANTS[@]}"; do if [ "${v}" = "${VARIANT}" ]; then exit 1; fi; done; exit 0 ) ; then
   echo "Unsupported variant '${VARIANT}'"
   exit 1