Remove redundant denied keys check in PUT /config

Co-authored-by: robot-ranger <93950632+robot-ranger@users.noreply.github.com>
Agent-Logs-Url: https://github.com/robot-ranger/cppagent/sessions/b380bd2a-959a-4a64-b609-ccba032cdc20

Author: Copilot

src/mtconnect/sink/rest_sink/rest_service.cpp

@@ -634,10 +634,6 @@ namespace mtconnect {
             std::vector<std::string> updatedKeys;
             for (auto& [key, value] : updates.items())
             {
-              // Skip denied keys
-              if (std::find(deniedKeys.begin(), deniedKeys.end(), key) != deniedKeys.end())
-                continue;
-              
               // Update the merged config
               mergedConfig[key] = value;
               updatedKeys.push_back(key);