Remove impls of uncallable SetupSet, VerifySet

There used to be overloads of `SetupSet` and `VerifySet` that accepted
two `Expression`s (one selecting the property, the other specifiying a
value for it) instead of a single `Action`. These have since been
marked as `[Obsolete(..., error: true)]`, which means client code that
tries to call them triggers a compile-time error.

Since the methods are in fact no longer callable, we can remove their
implementations and all code that's exclusively used by them.

src/Moq/Linq/Mocks.cs

@@ -94,7 +94,7 @@ public static IQueryable<T> Of<T>(Expression<Func<T, bool>> specification) where
 		[Obsolete("Moved to Mock.Of<T>, as it's a single one, so no reason to be on Mocks.", true)]
 		public static T OneOf<T>() where T : class
 		{
-			return Mock.Of<T>();
+			throw new NotSupportedException();
 		}
 
 		/// <summary>
@@ -108,7 +108,7 @@ public static T OneOf<T>() where T : class
 		[Obsolete("Moved to Mock.Of<T>, as it's a single one, so no reason to be on Mocks.", true)]
 		public static T OneOf<T>(Expression<Func<T, bool>> specification) where T : class
 		{
-			return Mock.Of<T>(specification);
+			throw new NotSupportedException();
 		}
 
 		/// <summary>

src/Moq/Obsolete/Mock.Generic.Legacy.cs

@@ -101,7 +101,7 @@ public ISetupSetter<T, TProperty> ExpectSet<TProperty>(Expression<Func<T, TPrope
 		[EditorBrowsable(EditorBrowsableState.Never)]
 		public ISetupSetter<T, TProperty> ExpectSet<TProperty>(Expression<Func<T, TProperty>> expression, TProperty value)
 		{
-			return Mock.SetupSet(this, expression, value);
+			throw new NotSupportedException();
 		}
 	}
 
@@ -120,7 +120,7 @@ public static class MockLegacyExtensions
 		public static ISetupSetter<T, TProperty> SetupSet<T, TProperty>(this Mock<T> mock, Expression<Func<T, TProperty>> expression, TProperty value)
 			where T : class
 		{
-			return Mock.SetupSet(mock, expression, value);
+			throw new NotSupportedException();
 		}
 
 		/// <summary>
@@ -131,7 +131,7 @@ public static ISetupSetter<T, TProperty> SetupSet<T, TProperty>(this Mock<T> moc
 		public static void VerifySet<T, TProperty>(this Mock<T> mock, Expression<Func<T, TProperty>> expression, TProperty value)
 			where T : class
 		{
-			Mock.VerifySet(mock, expression, value, Times.AtLeastOnce(), null);
+			throw new NotSupportedException();
 		}
 
 		/// <summary>
@@ -142,7 +142,7 @@ public static void VerifySet<T, TProperty>(this Mock<T> mock, Expression<Func<T,
 		public static void VerifySet<T, TProperty>(this Mock<T> mock, Expression<Func<T, TProperty>> expression, TProperty value, string failMessage)
 			where T : class
 		{
-			Mock.VerifySet(mock, expression, value, Times.AtLeastOnce(), failMessage);
+			throw new NotSupportedException();
 		}
 	}
 }

src/Moq/Obsolete/Mock.Legacy.cs

@@ -46,25 +46,6 @@ namespace Moq
 	// Keeps legacy implementations.
 	public partial class Mock
 	{
-		[Obsolete]
-		internal static SetterMethodCall<T, TProperty> SetupSet<T, TProperty>(
-			Mock mock,
-			Expression<Func<T, TProperty>> expression, TProperty value)
-			where T : class
-		{
-			var prop = expression.ToPropertyInfo();
-			Guard.CanWrite(prop);
-
-			var setter = prop.SetMethod;
-			ThrowIfSetupExpressionInvolvesUnsupportedMember(expression, setter);
-
-			var setup = new SetterMethodCall<T, TProperty>(mock, expression, setter, value);
-			var targetMock = GetTargetMock(((MemberExpression)expression.Body).Expression, mock);
-			targetMock.Setups.Add(setup);
-
-			return setup;
-		}
-
 		[Obsolete]
 		internal static void VerifySet<T, TProperty>(
 			Mock mock,
@@ -82,24 +63,5 @@ internal static void VerifySet<T, TProperty>(
 			};
 			VerifyCalls(GetTargetMock(((MemberExpression)expression.Body).Expression, mock), expected, expression, times);
 		}
-
-		[Obsolete]
-		internal static void VerifySet<T, TProperty>(
-			Mock mock,
-			Expression<Func<T, TProperty>> expression,
-			TProperty value,
-			Times times,
-			string failMessage)
-			where T : class
-		{
-			var method = expression.ToPropertyInfo().SetMethod;
-			ThrowIfVerifyExpressionInvolvesUnsupportedMember(expression, method);
-
-			var expected = new SetterMethodCall<T, TProperty>(mock, expression, method, value)
-			{
-				FailMessage = failMessage
-			};
-			VerifyCalls(GetTargetMock(((MemberExpression)expression.Body).Expression, mock), expected, expression, times);
-		}
 	}
 }

src/Moq/SetterMethodCall.cs

@@ -54,11 +54,6 @@ public SetterMethodCall(Mock mock, LambdaExpression originalExpression, MethodIn
 		{
 		}
 
-		public SetterMethodCall(Mock mock, LambdaExpression originalExpression, MethodInfo method, TProperty value)
-			: base(mock, null, originalExpression, method, new[] { ItExpr.Is<TProperty>(arg => Object.Equals(arg, value)) })
-		{
-		}
-
 		public SetterMethodCall(Mock mock, Condition condition, LambdaExpression originalExpression, MethodInfo method, Expression value)
 			: base(mock, condition, originalExpression, method, new[] { value })
 		{