Fix warnings

BTCPayServer.Tests/TestAccount.cs

@@ -479,7 +479,7 @@ namespace BTCPayServer.Tests
                         assert(typedEvt);
                         return typedEvt;
                     }
-                    catch (XunitException ex)
+                    catch (XunitException)
                     {
                     }
                 }

BTCPayServer/Services/Notifications/NotificationSender.cs

@@ -97,7 +97,9 @@ namespace BTCPayServer.Services.Notifications
             {
                 // Cannot specify StringComparison as EF core does not support it and would attempt client-side evaluation 
                 // ReSharper disable once CA1307
-                query = query.Where(user => user.DisabledNotifications == null ||  !user.DisabledNotifications.Contains(term ));
+#pragma warning disable CA1307 // Specify StringComparison
+                query = query.Where(user => user.DisabledNotifications == null ||  !user.DisabledNotifications.Contains(term));
+#pragma warning restore CA1307 // Specify StringComparison
             }
 
             return query.Select(user => user.Id).ToArray();