Revert "Accurate timespan if the stopwatch is high resolution (#1230)"

This reverts commit a683d9c8.

src/StackExchange.Redis/Profiling/ProfiledCommand.cs

@@ -19,15 +19,15 @@ internal sealed class ProfiledCommand : IProfiledCommand
 
         public DateTime CommandCreated => MessageCreatedDateTime;
 
-        public TimeSpan CreationToEnqueued => TimeSpanHelper.FromStopwatchTicks(EnqueuedTimeStamp - MessageCreatedTimeStamp);
+        public TimeSpan CreationToEnqueued => TimeSpan.FromTicks(EnqueuedTimeStamp - MessageCreatedTimeStamp);
 
-        public TimeSpan EnqueuedToSending => TimeSpanHelper.FromStopwatchTicks(RequestSentTimeStamp - EnqueuedTimeStamp);
+        public TimeSpan EnqueuedToSending => TimeSpan.FromTicks(RequestSentTimeStamp - EnqueuedTimeStamp);
 
-        public TimeSpan SentToResponse => TimeSpanHelper.FromStopwatchTicks(ResponseReceivedTimeStamp - RequestSentTimeStamp);
+        public TimeSpan SentToResponse => TimeSpan.FromTicks(ResponseReceivedTimeStamp - RequestSentTimeStamp);
 
-        public TimeSpan ResponseToCompletion => TimeSpanHelper.FromStopwatchTicks(CompletedTimeStamp - ResponseReceivedTimeStamp);
+        public TimeSpan ResponseToCompletion => TimeSpan.FromTicks(CompletedTimeStamp - ResponseReceivedTimeStamp);
 
-        public TimeSpan ElapsedTime => TimeSpanHelper.FromStopwatchTicks(CompletedTimeStamp - MessageCreatedTimeStamp);
+        public TimeSpan ElapsedTime => TimeSpan.FromTicks(CompletedTimeStamp - MessageCreatedTimeStamp);
 
         public IProfiledCommand RetransmissionOf => OriginalProfiling;
 

src/StackExchange.Redis/Profiling/TimeSpanHelper.cs

-using System;
-using System.Diagnostics;
-
-namespace StackExchange.Redis.Profiling
-{
-    /// <summary>
-    /// A helper class for dealing with Low/High Resolution Stopwatches and their ticks
-    /// </summary>
-    internal static class TimeSpanHelper
-    {
-        /// <summary>
-        /// Used to construct a timespan from ticks obtained using Stopwatch.GetTimestamp()
-        /// </summary>
-        /// <param name="ticks"></param>
-        /// <returns>A TimeSpan constructed from the ticks</returns>
-        internal static TimeSpan FromStopwatchTicks(long ticks)
-        {
-            return Stopwatch.IsHighResolution ? TimeSpan.FromMilliseconds(ticks / ((double) Stopwatch.Frequency / 1000)) : TimeSpan.FromTicks(ticks);
-        }
-    }
-}