qcacld-3.0: Remove obsolete "Pre-n" PropIE support

The driver contains remnant support for Proprietary IEs that were
inherited from the original "Pre-n" version of the driver.  Since
these IEs are no longer parsed or used, remove all references to them.

Change-Id: Iac7c3176682ce0054b7f06827fa6b6ec7be1e6a5
CRs-Fixed: 2374289
12 files changed