IB/ipath: Remove support for QLogic PCIe QLE devices

The ib_qib driver is taking over support for QLogic PCIe QLE devices,
so remove support for them from ib_ipath.  The ib_ipath driver now
supports only the obsolete QLogic Hyper-Transport IB host channel
adapter (model QHT7140).

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>