Enable unused variable warnings and resolve

This commit enables the "unused variables" warning in clang.  Throughout
this, it did point out several issues that would've been functional
bugs, so I think it was worthwhile.  It also cleaned up several unused
variable from old constructs that no longer exist.

Tested:
Built with clang.  Code no longer emits warnings.

Downloaded bmcweb to system and pulled up the webui, observed webui
loads and logs in properly.

Change-Id: I51505f4222cc147d6f2b87b14d7e2ac4a74cafa8
Signed-off-by: Ed Tanous <ed@tanous.net>
diff --git a/redfish-core/lib/event_service.hpp b/redfish-core/lib/event_service.hpp
index fa06fcf..7d17cea 100644
--- a/redfish-core/lib/event_service.hpp
+++ b/redfish-core/lib/event_service.hpp
@@ -51,8 +51,8 @@
     }
 
   private:
-    void doGet(crow::Response& res, const crow::Request& req,
-               const std::vector<std::string>& params) override
+    void doGet(crow::Response& res, const crow::Request&,
+               const std::vector<std::string>&) override
     {
         auto asyncResp = std::make_shared<AsyncResp>(res);
         res.jsonValue = {
@@ -92,7 +92,7 @@
     }
 
     void doPatch(crow::Response& res, const crow::Request& req,
-                 const std::vector<std::string>& params) override
+                 const std::vector<std::string>&) override
     {
         auto asyncResp = std::make_shared<AsyncResp>(res);
 
@@ -167,8 +167,8 @@
     }
 
   private:
-    void doPost(crow::Response& res, const crow::Request& req,
-                const std::vector<std::string>& params) override
+    void doPost(crow::Response& res, const crow::Request&,
+                const std::vector<std::string>&) override
     {
         EventServiceManager::getInstance().sendTestEventLog();
         res.result(boost::beast::http::status::no_content);
@@ -192,8 +192,8 @@
     }
 
   private:
-    void doGet(crow::Response& res, const crow::Request& req,
-               const std::vector<std::string>& params) override
+    void doGet(crow::Response& res, const crow::Request&,
+               const std::vector<std::string>&) override
     {
         auto asyncResp = std::make_shared<AsyncResp>(res);
 
@@ -219,7 +219,7 @@
     }
 
     void doPost(crow::Response& res, const crow::Request& req,
-                const std::vector<std::string>& params) override
+                const std::vector<std::string>&) override
     {
         auto asyncResp = std::make_shared<AsyncResp>(res);
 
@@ -464,7 +464,7 @@
 
   private:
     void doGet(crow::Response& res, const crow::Request& req,
-               const std::vector<std::string>& params) override
+               const std::vector<std::string>&) override
     {
         if (EventServiceManager::getInstance().getNumberOfSubscriptions() >=
             maxNoOfSubscriptions)
@@ -569,7 +569,7 @@
     }
 
   private:
-    void doGet(crow::Response& res, const crow::Request& req,
+    void doGet(crow::Response& res, const crow::Request&,
                const std::vector<std::string>& params) override
     {
         auto asyncResp = std::make_shared<AsyncResp>(res);
@@ -674,7 +674,7 @@
         EventServiceManager::getInstance().updateSubscriptionData();
     }
 
-    void doDelete(crow::Response& res, const crow::Request& req,
+    void doDelete(crow::Response& res, const crow::Request&,
                   const std::vector<std::string>& params) override
     {
         auto asyncResp = std::make_shared<AsyncResp>(res);