iwlwifi: remove old unsupported 3160/7260/7265/8000/8265 firmware

The upstream 4.8.0 kernel release dropped support for FW
versions older than -17 for 3160 and 7260 and older than -22
for newer NICs, as the 4.9 is currently the oldest supported
LTS so we can remove the associated older FW revs.

The upstream linux commits were 4b87e5af638b and 15098803d3877

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>

WHENCE

@@ -862,92 +862,15 @@ Version: 18.168.6.1
 File: iwlwifi-2000-6.ucode
 Version: 18.168.6.1
 
-File: iwlwifi-7260-7.ucode
-Version: 22.1.7.0
-
-File: iwlwifi-7260-8.ucode
-Version: 22.24.8.0
-
-File: iwlwifi-7260-9.ucode
-Version: 25.228.9.0
-
-File: iwlwifi-7260-10.ucode
-Version: 23.15.10.0
-
-File: iwlwifi-7260-12.ucode
-Version: 25.17.12.0
-
-File: iwlwifi-7260-13.ucode
-Version: 25.30.13.0
-
-File: iwlwifi-7260-16.ucode
-Version: 16.242414.0
-
 File: iwlwifi-7260-17.ucode
 Version: 17.bfb58538.0
 
-File: iwlwifi-3160-7.ucode
-Version: 22.1.7.0
-
-File: iwlwifi-3160-8.ucode
-Version: 22.24.8.0
-
-File: iwlwifi-3160-9.ucode
-Version: 25.228.9.0
-
-File: iwlwifi-3160-10.ucode
-Version: 23.15.10.0
-
-File: iwlwifi-3160-12.ucode
-Version: 25.17.12.0
-
-File: iwlwifi-3160-13.ucode
-Version: 25.30.13.0
-
-File: iwlwifi-3160-16.ucode
-Version: 16.242414.0
-
 File: iwlwifi-3160-17.ucode
 Version: 17.bfb58538.0
 
-File: iwlwifi-7265-8.ucode
-Version: 22.24.8.0
-
-File: iwlwifi-7265-9.ucode
-Version: 25.228.9.0
-
-File: iwlwifi-7265-10.ucode
-Version: 23.15.10.0
-
-File: iwlwifi-7265-12.ucode
-Version: 25.17.12.0
-
-File: iwlwifi-7265-13.ucode
-Version: 25.30.13.0
-
-File: iwlwifi-7265-16.ucode
-Version: 16.242414.0
-
 File: iwlwifi-7265-17.ucode
 Version: 17.bfb58538.0
 
-Link: iwlwifi-7265D-10.ucode -> iwlwifi-7265-10.ucode
-
-File: iwlwifi-7265D-12.ucode
-Version: 25.17.12.0
-
-File: iwlwifi-7265D-13.ucode
-Version: 25.30.13.0
-
-File: iwlwifi-7265D-16.ucode
-Version: 16.242414.0
-
-File: iwlwifi-7265D-17.ucode
-Version: 17.352738.0
-
-File: iwlwifi-7265D-21.ucode
-Version: 21.302800.0
-
 File: iwlwifi-7265D-22.ucode
 Version: 22.391740.0
 
@@ -957,9 +880,6 @@ Version: 27.541033.0
 File: iwlwifi-7265D-29.ucode
 Version: 29.f2390aa8.0
 
-File: iwlwifi-3168-21.ucode
-Version: 21.302800.0
-
 File: iwlwifi-3168-22.ucode
 Version: 22.391740.0
 
@@ -969,15 +889,6 @@ Version: 27.541033.0
 File: iwlwifi-3168-29.ucode
 Version: 29.0bd893f3.0
 
-File: iwlwifi-8000C-13.ucode
-Version: 25.30.13.0
-
-File: iwlwifi-8000C-16.ucode
-Version: 16.242414.0
-
-File: iwlwifi-8000C-21.ucode
-Version: 21.302800.0
-
 File: iwlwifi-8000C-22.ucode
 Version: 22.391740.0
 
@@ -993,9 +904,6 @@ Version: 34.610288.0
 File: iwlwifi-8000C-36.ucode
 Version: 36.ca7b901d.0
 
-File: iwlwifi-8265-21.ucode
-Version: 21.302800.0
-
 File: iwlwifi-8265-22.ucode
 Version: 22.391740.0