Only add missing operator overloads in C# generator.

src/Generator/Passes/CheckOperatorsOverloads.cs

@@ -24,6 +24,8 @@ namespace CppSharp.Passes
             // Check for C++ operators that cannot be represented in C#.
             CheckInvalidOperators(@class);
 
+            if (Driver.Options.IsCSharpGenerator)
+            {
                 // The comparison operators, if overloaded, must be overloaded in pairs;
                 // that is, if == is overloaded, != must also be overloaded. The reverse
                 // is also true, and similar for < and >, and for <= and >=.
@@ -36,6 +38,7 @@ namespace CppSharp.Passes
 
                 HandleMissingOperatorOverloadPair(@class, CXXOperatorKind.LessEqual,
                                                   CXXOperatorKind.GreaterEqual);
+            }
 
             return false;
         }