validate-comps: don't set -x any more

This is only really useful for debugging the script itself, it's
not useful information for typical execution (especially now I
made it show which test(s) fail more clearly).

Signed-off-by: Adam Williamson <awilliam@redhat.com>

ci/validate-comps

@@ -1,6 +1,6 @@
 #!/usr/bin/bash
 
-set -euxo pipefail
+set -euo pipefail
 
 main() {
     failure=0