ASP.NET .NET 4.6 MVC4 application loads unnessecary assemblie, eq. System.Data.OracleClient . Oracle is not used.
Assembly dependencies are created using code in con
My workstation at work has references to Oracle all throughout my machine.config. I believe you're going to find your rogue references there.
c:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\machine.config