Fix missing comparisons in DeadCodeEliminator

Author: SamboyCoding

Cpp2IL.Core/Analysis/DeadCodeEliminator.cs

@@ -106,8 +106,8 @@ OpCode.Move or OpCode.Phi
                 or OpCode.Add or OpCode.Subtract or OpCode.Multiply or OpCode.Divide
                 or OpCode.ShiftLeft or OpCode.ShiftRight
                 or OpCode.And or OpCode.Or or OpCode.Xor
-                or OpCode.Not or OpCode.Negate
-                or OpCode.CheckEqual or OpCode.CheckGreater or OpCode.CheckLess => true,
+                or OpCode.Not or OpCode.Negate=> true,
+            >= OpCode.CheckEqual and <= OpCode.CheckLessOrEqual => true,
             _ => false
         };
 }