remove inline set -e that is preventing explanations

the script has a set -e mid way through which is now defeating
the explanation parts of the script. Remove this to actually
come back to our normally scheduled program.

Change-Id: I53b5888f44083731b60e03a833f6d8e7769e0e47

modules/jenkins/files/slave_scripts/run-unittests.sh

@@ -50,7 +50,6 @@ if [ -d ".testrepository" ] ; then
     gzip -9 ./testr_results.html
 
     export PYTHON=.tox/$venv/bin/python
-    set -e
     rancount=$(.tox/$venv/bin/testr last | sed -ne 's/Ran \([0-9]\+\).*tests in.*/\1/p')
     if [ "$rancount" -eq "0" ] ; then
         echo