main: Stop setting `COSA_META_SCHEMA`
We already have fallback defaults in the code.  Avoiding global
environment variables is good on general principle; but this
is specifically prep for making the entrypoint a Go program.
@@ -74,14 +74,6 @@ if [ -z "${cmd}" ]; then
fi
shift
-COSA_META_SCHEMA="${COSA_META_SCHEMA:-/usr/lib/coreos-assembler/v1.json}"
-schema_override="${PWD}/src/config/schema.json"
-if [ -e "${schema_override}" ]; then
- COSA_META_SCHEMA=$(realpath "${schema_override}")
-fi
-export COSA_META_SCHEMA
-
-
target=/usr/lib/coreos-assembler/cmd-${cmd}
if test -x "${target}"; then
exec "${target}" "$@"
