start-testsuite.sh: remove superflouse `set -e`

The set -e will not interfere with the next command,
as it's executed and not included.
The exit code of the last command is returned with and without -e.

Change-Id: I820d59b29b4ba4a1d094c5c2a2af367e6ef4e5b6

start-testsuite.sh

@@ -42,5 +42,4 @@ if [ ! -x "$compare" ]; then
   exit 1
 fi
 
-set -e
 "$compare" "$expected" "$last_log" $OSMO_TTCN3_COMPARE_ARGS