remove unused file

scripts/conv-to-stable.sh

-#!/bin/bash
-
-x=$1
-y=$2
-
-cp comps-rocky-${x}-lh.xml.in comps-rocky-${x}.${y}.xml.in
-sed -i '/rocky-release-eula/d' comps-rocky-${x}.${y}.xml.in
-sed -i '/redhat-release-eula/d' comps-rocky-${x}.${y}.xml.in
-sed -i '/rhc-devel/d' comps-rocky-${x}.${y}.xml.in
-sed -i '/rhc/d' comps-rocky-${x}.${y}.xml.in
-sed -i '/insights-client/d' comps-rocky-${x}.${y}.xml.in