Adjust installer scripts to remove .deb/.rpm files

The installer scripts left .deb/.rpm files lying around
which can confuse later steps.

Signed-off-by: Lott, Christopher (cl778h) <cl778h@att.com>
Change-Id: Iab04fcabaded628938f0a8685218d04f9a483bed
diff --git a/jjb/shell/install-deb-nng-rmr.sh b/jjb/shell/install-deb-nng-rmr.sh
index c3cd175..8b472c0 100644
--- a/jjb/shell/install-deb-nng-rmr.sh
+++ b/jjb/shell/install-deb-nng-rmr.sh
@@ -65,5 +65,6 @@
 wget -nv --content-disposition https://packagecloud.io/o-ran-sc/staging/packages/debian/stretch/${deb}/download.deb
 echo "Install RMR library file ${deb}"
 sudo dpkg -i ${deb}
+rm -f ${deb}
 
 echo "---> install-deb-nng-rmr.sh ends"