scripts: don't pass output= to server; formatting is client-side only

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/oq

@@ -83,7 +83,6 @@ cwd=${cwd:-$(pwd)}
     [ -n "$agent"   ] && printf 'agent=%s\n'   "$agent"
     [ -n "$backend" ] && printf 'backend=%s\n' "$backend"
     [ -n "$model"   ] && printf 'model=%s\n'   "$model"
-    [ -n "$output"  ] && printf 'output=%s\n'  "$output"
     printf 'parallel=%s\n' "$parallel"
     printf -- '---\n'
     printf '%s\n' "$prompt"