Fix-up usings

Remove redundant using statements.

src/Polly.Core.Tests/CircuitBreaker/Health/HealthMetricsTests.cs

@@ -1,4 +1,3 @@
-using System;
 using Polly.CircuitBreaker;
 using Polly.CircuitBreaker.Health;
 

src/Polly.Core.Tests/Hedging/Controller/TaskExecutionTests.cs

@@ -1,12 +1,7 @@
-using System;
-using System.Threading.Tasks;
-using Polly.Core.Tests.Helpers;
 using Polly.Hedging;
 using Polly.Hedging.Controller;
 using Polly.Hedging.Utils;
-using Polly.Strategy;
 using Polly.Utils;
-using TimeProvider = Polly.Utils.TimeProvider;
 
 namespace Polly.Core.Tests.Hedging.Controller;
 

src/Polly.Core.Tests/Hedging/HedgingResilienceStrategyTests.cs

@@ -1,4 +1,3 @@
-using System;
 using Polly.Hedging;
 using Polly.Strategy;
 using Xunit.Abstractions;

src/Polly.Core.Tests/Hedging/HedgingTimeProvider.cs

@@ -1,7 +1,3 @@
-using System;
-using System.Threading;
-using System.Threading.Tasks;
-
 namespace Polly.Core.Tests.Hedging;
 
 internal class HedgingTimeProvider : TimeProvider

src/Polly.Core.Tests/Polly.Core.Tests.csproj

@@ -10,7 +10,7 @@
     <NoWarn>$(NoWarn);SA1600;SA1204;SA1602</NoWarn>
     <Include>[Polly.Core]*</Include>
   </PropertyGroup>
-  
+
   <ItemGroup>
     <PackageReference Include="Polly.Contrib.WaitAndRetry" />
   </ItemGroup>

src/Polly.Core.Tests/Utils/CancellationTokenSourcePoolTests.cs

@@ -1,10 +1,5 @@
-using System;
-using System.Threading;
 using Moq;
-using Polly.Core.Tests.Helpers;
 using Polly.Utils;
-using Xunit;
-using TimeProvider = Polly.Utils.TimeProvider;
 
 namespace Polly.Core.Tests.Utils;
 

src/Polly.Core.Tests/Utils/TimeProviderExtensionsTests.cs

@@ -1,6 +1,3 @@
-using Polly.Utils;
-using TimeProvider = Polly.Utils.TimeProvider;
-
 namespace Polly.Core.Tests.Utils;
 
 public class TimeProviderExtensionsTests

src/Polly.Core/CircuitBreaker/Controller/CircuitStateController.cs

@@ -1,5 +1,4 @@
 using Polly.Strategy;
-using TimeProvider = Polly.Utils.TimeProvider;
 
 namespace Polly.CircuitBreaker;
 

src/Polly.Core/CircuitBreaker/Health/HealthMetrics.cs

@@ -1,5 +1,3 @@
-using TimeProvider = Polly.Utils.TimeProvider;
-
 namespace Polly.CircuitBreaker.Health;
 
 /// <summary>

src/Polly.Core/CircuitBreaker/Health/RollingHealthMetrics.cs

@@ -1,5 +1,3 @@
-using TimeProvider = Polly.Utils.TimeProvider;
-
 namespace Polly.CircuitBreaker.Health;
 
 /// <inheritdoc/>

src/Polly.Core/CircuitBreaker/Health/SingleHealthMetrics.cs

@@ -1,6 +1,3 @@
-using Polly;
-using TimeProvider = Polly.Utils.TimeProvider;
-
 namespace Polly.CircuitBreaker.Health;
 
 /// <inheritdoc/>

src/Polly.Core/Hedging/Controller/HedgingController.cs

@@ -1,6 +1,4 @@
 using Polly.Hedging.Controller;
-using Polly.Utils;
-using TimeProvider = Polly.Utils.TimeProvider;
 
 namespace Polly.Hedging.Utils;
 

src/Polly.Core/Hedging/Controller/HedgingExecutionContext.cs

@@ -1,11 +1,5 @@
-using System;
-using System.Collections.Generic;
-using System.Threading.Tasks;
 using Polly.Hedging.Controller;
 using Polly.Strategy;
-using Polly.Utils;
-using static Polly.Hedging.Utils.HedgingExecutionContext;
-using TimeProvider = Polly.Utils.TimeProvider;
 
 namespace Polly.Hedging.Utils;
 

src/Polly.Core/Hedging/HedgingResilienceStrategy.cs

@@ -1,7 +1,5 @@
 using System.Diagnostics.CodeAnalysis;
-using System.Runtime.CompilerServices;
 using System.Runtime.ExceptionServices;
-using System.Threading;
 using Polly.Hedging;
 using Polly.Hedging.Utils;
 using Polly.Strategy;

src/Polly.Core/Hedging/HedgingResilienceStrategyBuilderExtensions.cs

@@ -1,6 +1,5 @@
 using System.ComponentModel.DataAnnotations;
 using Polly.Hedging;
-using TimeProvider = Polly.Utils.TimeProvider;
 
 namespace Polly;
 

src/Polly.Core/ResilienceStrategyBuilder.cs

@@ -1,6 +1,5 @@
 using System.ComponentModel.DataAnnotations;
 using Polly.Strategy;
-using TimeProvider = Polly.Utils.TimeProvider;
 
 namespace Polly;
 

src/Polly.Core/Retry/RetryResilienceStrategy.cs

@@ -1,6 +1,4 @@
-using System;
 using Polly.Strategy;
-using TimeProvider = Polly.Utils.TimeProvider;
 
 namespace Polly.Retry;
 

src/Polly.Core/Strategy/ResilienceStrategyBuilderContext.cs

@@ -1,5 +1,4 @@
 using Polly.Telemetry;
-using TimeProvider = Polly.Utils.TimeProvider;
 
 namespace Polly.Strategy;
 

src/Polly.Core/Timeout/TimeoutResilienceStrategy.cs

@@ -1,7 +1,4 @@
-using System;
-using System.Threading.Tasks;
 using Polly.Strategy;
-using TimeProvider = Polly.Utils.TimeProvider;
 
 namespace Polly.Timeout;
 

src/Polly.Extensions/Telemetry/TelemetryResilienceStrategy.cs

@@ -1,6 +1,4 @@
-using System;
 using System.Diagnostics.Metrics;
-using System.Threading.Tasks;
 using Microsoft.Extensions.Logging;
 using Polly.Strategy;
 using Polly.Telemetry;