Suppress warnings from fields never used or never assigned (CS0169 and CS0649) (#919)

* chore : disable unwanted warnings and minor code cleanup

* chore : remove more warnings

* fix : reorder struct correctly

* fix : restore _isKernel and remove useless comment

* fix : copy/paste error

* fix : restore CallMethod call

* fix : whitespace

* chore : clean using

* feat : remove warnings

* fix : simplify warning removal on struct

* fix : revert fields deletion and code clean up

* fix : re-add RE value

* fix : typo

ARMeilleure/Diagnostics/Logger.cs

@@ -6,9 +6,11 @@ namespace ARMeilleure.Diagnostics
 {
     static class Logger
     {
+#pragma warning disable CS0169
         private static long _startTime;
 
         private static long[] _accumulatedTime;
+#pragma warning restore CS0196
 
         static Logger()
         {