curl: don't set CURLOPT_INTERLEAVEDATA

That data is only ever used by the CURLOPT_INTERLEAVEFUNCTION callback
and that option isn't set or used by the curl tool!

Updates the 9 tests that verify --libcurl

Closes #2167

src/tool_operate.c

@@ -864,7 +864,7 @@ static CURLcode operate_do(struct GlobalConfig *global,
 
         /* where to store */
         my_setopt(curl, CURLOPT_WRITEDATA, &outs);
-        my_setopt(curl, CURLOPT_INTERLEAVEDATA, &outs);
+
         if(metalink || !config->use_metalink)
           /* what call to write */
           my_setopt(curl, CURLOPT_WRITEFUNCTION, tool_write_cb);