emergency: Remove bogus curl_global_cleanup() at runtime

Suggested by Walter Doekes (@wdoekes)

(cherry picked from commit f91c13a)

modules/emergency/post_curl.c

@@ -119,7 +119,7 @@ int post(char*  url, char* xml, char** response){
 		LM_DBG("CURL DEPOIS DO FREE...\n");
 		return resp;
 	}
-	curl_global_cleanup();
+
 	free(data.data);
 	return  -1;
 }