serial: exar: Revert "serial: exar: Add support for Sealevel 7xxxC serial cards"

serial: exar: Revert "serial: exar: Add support for Sealevel 7xxxC serial cards"

Hardware ID of Sealevel 7xxxC cards changed prior to release.
This has rendered 14ee78d5932a redundant.

This reverts commit 14ee78d5932afeb710c8305196a676a715bfdea8.

Signed-off-by: Matthew Howell <matthew.howell@sealevel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/8ffa2f583ff142c3b0eb6cf51a7c9cef5dbfd320.camel@sealevel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>