Revert "tool: add a retry delay for transfers to same origin on 429"

This reverts commit c5fb460e7c.

This needs some further work before we can do this.

Fixes #21822
Closes #21824

src/tool_operate.h

@@ -44,7 +44,6 @@ struct per_transfer {
   struct curltime start; /* start of this transfer */
   struct curltime retrystart;
   char *url;
-  char *origin;
   curl_off_t urlnum; /* the index of the given URL */
   char *outfile;
   int infd;