Revert "urldata: move async resolver state from easy handle to connectdata"

This reverts commit 56a4db2e4e (#12198)

We want the c-ares channel to be held in the easy handle, not per
connection - for performance.

Closes #12524

lib/vtls/openssl.c

@@ -3175,6 +3175,8 @@ static CURLcode populate_x509_store(struct Curl_cfilter *cf,
   bool imported_native_ca = false;
   bool imported_ca_info_blob = false;
 
+  CURL_TRC_CF(data, cf, "populate_x509_store, path=%s, blob=%d",
+              ssl_cafile? ssl_cafile : "none", !!ca_info_blob);
   if(!store)
     return CURLE_OUT_OF_MEMORY;