Misc cleanups

Source/Game/Server/WorldConfig.cs

@@ -40,7 +40,7 @@ namespace Game
             Values[WorldCfg.EnableSinfoLogin] = GetDefaultValue("Server.LoginInfo", 0);
 
             // Read all rates from the config file
-            void SetRegenRate(WorldCfg rate, string configKey)
+            static void SetRegenRate(WorldCfg rate, string configKey)
             {
                 Values[rate] = GetDefaultValue(configKey, 1.0f);
                 if ((float) Values[rate] < 0.0f)

Source/Game/Server/WorldManager.cs

@@ -1444,7 +1444,7 @@ namespace Game
                 return BanReturn.Exists;
 
             SQLResult resultAccounts;
-            PreparedStatement stmt = null;
+            PreparedStatement stmt;
 
             // Update the database with ban information
             switch (mode)
@@ -1522,7 +1522,7 @@ namespace Game
         /// Remove a ban from an account or IP address
         public bool RemoveBanAccount(BanMode mode, string nameOrIP)
         {
-            PreparedStatement stmt = null;
+            PreparedStatement stmt;
             if (mode == BanMode.IP)
             {
                 stmt = DB.Login.GetPreparedStatement(LoginStatements.DEL_IP_NOT_BANNED);