Fixing some compilation warnings.

--HG--
branch : dev

src/Orchard.Tests/Commands/CommandHandlerDescriptorBuilderTests.cs

@@ -52,7 +52,6 @@ namespace Orchard.Tests.Commands {
         public class PublicMethodsOnly {
             public bool Bar { get; set; }   // no accessors
             public bool Field = true;       // no field
-            public event Action<int> Event; // no event adder, remover, etc.
 
             // no private method
             private void Blah() {
@@ -66,10 +65,19 @@ namespace Orchard.Tests.Commands {
             public static bool operator ==(PublicMethodsOnly a, PublicMethodsOnly b) {
                 return false;
             }
+
             public static bool operator !=(PublicMethodsOnly a, PublicMethodsOnly b) {
                 return false;
             }
 
+            public override int GetHashCode() {
+                throw new NotImplementedException();
+            }
+
+            public override bool Equals(Object obj) {
+                throw new NotImplementedException();
+            }
+
             public void Method() {
             }
         }