ext/curl: Remove workaround for old libcurl

Author: Girgias

ext/curl/interface.c

@@ -555,15 +555,6 @@ PHP_MSHUTDOWN_FUNCTION(curl)
 }
 /* }}} */
 
-/* {{{ curl_write_nothing
- * Used as a work around. See _php_curl_close_ex
- */
-static size_t curl_write_nothing(char *data, size_t size, size_t nmemb, void *ctx)
-{
-	return size * nmemb;
-}
-/* }}} */
-
 /* {{{ curl_write */
 static size_t curl_write(char *data, size_t size, size_t nmemb, void *ctx)
 {
@@ -2679,20 +2670,6 @@ static void curl_free_obj(zend_object *object)
 
 	_php_curl_verify_handlers(ch, /* reporterror */ false);
 
-	/*
-	 * Libcurl is doing connection caching. When easy handle is cleaned up,
-	 * if the handle was previously used by the curl_multi_api, the connection
-	 * remains open un the curl multi handle is cleaned up. Some protocols are
-	 * sending content like the FTP one, and libcurl try to use the
-	 * WRITEFUNCTION or the HEADERFUNCTION. Since structures used in those
-	 * callback are freed, we need to use an other callback to which avoid
-	 * segfaults.
-	 *
-	 * Libcurl commit d021f2e8a00 fix this issue and should be part of 7.28.2
-	 */
-	curl_easy_setopt(ch->cp, CURLOPT_HEADERFUNCTION, curl_write_nothing);
-	curl_easy_setopt(ch->cp, CURLOPT_WRITEFUNCTION, curl_write_nothing);
-
 	curl_easy_cleanup(ch->cp);
 
 	/* cURL destructors should be invoked only by last curl handle */