Removed unrequired bash set

Signed-off-by: Florent Poinsard <florent.poinsard@outlook.fr>

tools/do_release.sh

@@ -14,8 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-set -euo pipefail
-
 ROOT=$(pwd)
 if [ "$VTROOT" != "" ]; then
     ROOT=$VTROOT