unset launcher for gasnet

Signed-off-by: Jade Abraham <[email protected]>

Author: jabraham17

Diff for: util/cron/test-ml-mimalloc.bash

@@ -5,6 +5,7 @@
 UTIL_CRON_DIR=$(cd $(dirname ${BASH_SOURCE[0]}) ; pwd)
 source $UTIL_CRON_DIR/common-gasnet.bash
 source $UTIL_CRON_DIR/common-localnode-paratest.bash
+unset CHPL_LAUNCHER
 
 export GASNET_QUIET=Y