msm: ethernet: Remove IOSS v1 driver

Remove IOSS v1 driver since all ethernet drivers have migrated to IOSS
v2.

This reverts commit 86f3ff3e.
This reverts commit 15c887d0.
This reverts commit 48503e34.

Change-Id: I1b399c565197dcd7251edf39c1ededa7fbd3d296
Signed-off-by: Jinesh K. Jayakumar <jineshk@codeaurora.org>