Remove Expression->Statement operator implicit.

ICSharpCode.Decompiler/CSharp/Syntax/Statements/BlockStatement.cs

@@ -150,7 +150,12 @@ namespace ICSharpCode.Decompiler.CSharp.Syntax
 		{
 			AddChild(statement, StatementRole);
 		}
-		
+
+		public void Add(Expression expression)
+		{
+			AddChild(new ExpressionStatement(expression), StatementRole);
+		}
+
 		IEnumerator<Statement> IEnumerable<Statement>.GetEnumerator()
 		{
 			return this.Statements.GetEnumerator();

ICSharpCode.Decompiler/CSharp/Syntax/Statements/Statement.cs

@@ -123,10 +123,5 @@ namespace ICSharpCode.Decompiler.CSharp.Syntax
 		public override NodeType NodeType {
 			get { return NodeType.Statement; }
 		}
-
-		public static implicit operator Statement (Expression type)
-		{
-			return new ExpressionStatement(type);
-		}
 	}
 }