log_service: crashdump entry: remove app

clang14 complains about
"lambda capture 'app' is not used [-Werror,-Wunused-lambda-capture]".

This commit removes app. Originally app is used in Redfish route but we
removed that since crashdump files are not Redfish resources.

Tested: code compiles. Strong type guarantees the correctness.

Signed-off-by: Nan Zhou <nanzhoumails@gmail.com>
Change-Id: I935906097fdae3f975f2435adc4964bb7dd3875f
diff --git a/redfish-core/lib/log_services.hpp b/redfish-core/lib/log_services.hpp
index 3b1da0e..a10075a 100644
--- a/redfish-core/lib/log_services.hpp
+++ b/redfish-core/lib/log_services.hpp
@@ -2923,9 +2923,9 @@
         "/redfish/v1/Systems/system/LogServices/Crashdump/Entries/<str>/<str>/")
         .privileges(redfish::privileges::getLogEntry)
         .methods(boost::beast::http::verb::get)(
-            [&app](const crow::Request& req,
-                   const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
-                   const std::string& logID, const std::string& fileName) {
+            [](const crow::Request& req,
+               const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
+               const std::string& logID, const std::string& fileName) {
         // Do not call getRedfishRoute here since the crashdump file is not a
         // Redfish resource.
         auto getStoredLogCallback =