ixgb: Remove ixgb driver

There are likely no users of this driver as the hardware has been
discontinued since 2010. Remove the driver and all references to it
in documentation.

Suggested-by: Jakub Kicinski <[email protected]>
Signed-off-by: Tony Nguyen <[email protected]>
Acked-by: Jesse Brandeburg <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: anguy11

Documentation/PCI/pci-error-recovery.rst

@@ -418,7 +418,6 @@ That is, the recovery API only requires that:
    - drivers/next/e100.c
    - drivers/net/e1000
    - drivers/net/e1000e
-   - drivers/net/ixgb
    - drivers/net/ixgbe
    - drivers/net/cxgb3
    - drivers/net/s2io.c

Documentation/networking/device_drivers/ethernet/index.rst

@@ -31,7 +31,6 @@ Contents:
    intel/fm10k
    intel/igb
    intel/igbvf
-   intel/ixgb
    intel/ixgbe
    intel/ixgbevf
    intel/i40e