Fix problem where errors from build script were getting eaten

Change-Id: Ifed5a487f603707429673022286a16939e6bd816
diff --git a/tools/build/onos-build-and-upload b/tools/build/onos-build-and-upload
index 0dfea42..d308d99 100755
--- a/tools/build/onos-build-and-upload
+++ b/tools/build/onos-build-and-upload
@@ -17,7 +17,7 @@
 set -x
 
 # fix version strings, build artifacts, upload artifacts
-onos-release $VERSION $DRY_RUN | tee build.log
+onos-release $VERSION $DRY_RUN
 
 if [ $dryRun -eq 0 ]; then
     # upload docs