remove the heartbeat history configuration for a window

dotnet/SafelyYou/Program.cs

@@ -1,6 +1,5 @@
 using SafelyYou;
 using SafelyYou.Api;
-using SafelyYou.Config;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -14,12 +13,6 @@ builder.Services.AddSingleton<KnownDevices>(_ =>
     return new KnownDevices(deviceIds);
 });
 
-builder.Services.AddSingleton<HeartBeatHistoryConfig>(_ =>
-{
-    var millis = builder.Configuration.GetSection("HeartBeatHistory").GetValue<int>("WindowMillis");
-    return new HeartBeatHistoryConfig() { Window = TimeSpan.FromMilliseconds(millis) };
-});
-
 builder.Services.AddSingleton<HeartBeatHistories>();
 builder.Services.AddSingleton<UploadTimes>();