e1000: Revert Update intel shared code
This reverts commit fc7682b17f3738573099b8b03f5628dcc8148adb.
This will be done incrementally to help with bisecting an issue in
later I21x devices (ich8lan).
PR: 258153
Approved by: imp
MFC after: 1 day
(cherry picked from commit a4378873e9ce1b35b55378c21f8eae69e58c2525)