fix: remove TestSql.cs that caused build errors

src/Predictalytics.Infrastructure/TestSql.cs

@@ -1,31 +0,0 @@
-using Microsoft.EntityFrameworkCore;
-using Microsoft.Extensions.DependencyInjection;
-using Predictalytics.Infrastructure.Data;
-using Predictalytics.Infrastructure.Data.Repositories;
-using System;
-using System.Linq;
-
-var services = new ServiceCollection();
-var dbVersion = new MySqlServerVersion(new Version(8, 0, 36));
-services.AddDbContext<AppDbContext>(o => o.UseMySql("Server=localhost;Database=test;User=root;Password=test", dbVersion));
-services.AddScoped<ITraderRepository, TraderRepository>();
-var sp = services.BuildServiceProvider();
-using var scope = sp.CreateScope();
-var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();
-
-var priorityCutoff = DateTime.UtcNow.AddHours(-1);
-var normalCutoff = DateTime.UtcNow.AddHours(-12);
-
-var query = db.Traders
-    .Include(t => t.WatchlistEntries)
-    .Where(t => t.LastTradesUpdatedAt == null || 
-                (!t.IsInitialImportComplete) || 
-                ((!t.IsAutoDiscovered || t.WatchlistEntries.Any()) && t.LastTradesUpdatedAt < priorityCutoff) ||
-                (t.IsAutoDiscovered && t.LastTradesUpdatedAt < normalCutoff))
-    .OrderBy(t => t.IsAutoDiscovered)
-    .ThenByDescending(t => t.WatchlistEntries.Any())
-    .ThenBy(t => t.IsInitialImportComplete)
-    .ThenBy(t => t.LastTradesUpdatedAt ?? DateTime.MinValue)
-    .Take(20);
-
-Console.WriteLine(query.ToQueryString());