use upstream

Author: blink1073

.evergreen/scripts/configure-env.sh

@@ -78,8 +78,6 @@ EOT
 rm -rf $DRIVERS_TOOLS
 BRANCH=master
 ORG=mongodb-labs
-BRANCH=ocsp-updates
-ORG=blink1073
 git clone --branch $BRANCH https://github.com/$ORG/drivers-evergreen-tools.git $DRIVERS_TOOLS
 
 cat <<EOT > ${DRIVERS_TOOLS}/.env