Removed BUCK files and Buck related support scripts and other collateral.

Change-Id: Ic6debd17e2d9d2f1c8b894f816efaca2853e433f
diff --git a/tools/build/envDefaults b/tools/build/envDefaults
index 09e6979..b00ba3d 100644
--- a/tools/build/envDefaults
+++ b/tools/build/envDefaults
@@ -33,16 +33,7 @@
 export ONOS_TAR=$ONOS_STAGE.tar.gz
 export ONOS_ZIP=$ONOS_STAGE.zip
 
-# If the bazel-built bits are newer than the buck-built bits, use the former.
-BUCK_TAR=$ONOS_ROOT/buck-out/gen/tools/package/onos-package/onos.tar.gz
-BAZEL_TAR=$ONOS_ROOT/bazel-bin/onos.tar.gz
-if [ -f $BAZEL_TAR ] && [ $BAZEL_TAR -nt $ONOS_TAR ]; then
-    rm -f $ONOS_TAR >/dev/null; ln -s $BAZEL_TAR $ONOS_TAR
-else
-    if [ -f $BUCK_TAR ] && [ $BUCK_TAR -nt $ONOS_TAR ]; then
-        rm -f $ONOS_TAR >/dev/null; ln -s $BUCK_TAR $ONOS_TAR
-    fi
-fi
+ONOS_TAR=$ONOS_ROOT/bazel-bin/onos.tar.gz
 
 # ONOS test bits (onos-test.tar.gz) staging environment
 export ONOS_TEST_BITS=onos-test-${ONOS_VERSION%~*}