Removed hack for icon persisted as bitmap

I tested in vs 2012/2010/2008 and not one persisted icons with typeof(Bitmap), which is what this code apparently was designed to handle.  They all persisted appropriately like this:

  <data name="Icon" type="System.Resources.ResXFileRef, System.Windows.Forms">
    <value>..\Resources\Icon.ico;System.Drawing.Icon, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
  </data>

I removed this code because I use ResX files in a web app, I'm trying to use monolinker to cut down on assembly size, and the explicit reference to system.drawing.icon and system.drawing.bitmap brings all kinds of other stuff in.  This code was a hack for some uncommented instance of icons being persisted with typeof(Bitmap)