bnx2: Drop unsupported Broadcom NetXtremeII firmware

The last time the Broadcom NetXtremeII firmware was updated
and only the latest firmwares are supported in all current
stable kernels so let's drop all the unsupported versions.
They're in git and releases for those that wish to find them.

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

WHENCE

@@ -1516,29 +1516,10 @@ Found in hex form in kernel source.
 
 Driver: bnx2 - Broadcom NetXtremeII
 
-File: bnx2/bnx2-mips-06-4.6.16.fw
-File: bnx2/bnx2-mips-06-5.0.0.j3.fw
-File: bnx2/bnx2-mips-06-5.0.0.j6.fw
-File: bnx2/bnx2-mips-06-6.0.15.fw
-File: bnx2/bnx2-mips-06-6.2.1.fw
 File: bnx2/bnx2-mips-06-6.2.3.fw
-File: bnx2/bnx2-mips-09-4.6.17.fw
-File: bnx2/bnx2-mips-09-5.0.0.j3.fw
-File: bnx2/bnx2-mips-09-5.0.0.j9.fw
-File: bnx2/bnx2-mips-09-5.0.0.j15.fw
-File: bnx2/bnx2-mips-09-6.0.17.fw
-File: bnx2/bnx2-mips-09-6.2.1.fw
-File: bnx2/bnx2-mips-09-6.2.1a.fw
 File: bnx2/bnx2-mips-09-6.2.1b.fw
-File: bnx2/bnx2-rv2p-06-4.6.16.fw
-File: bnx2/bnx2-rv2p-06-5.0.0.j3.fw
 File: bnx2/bnx2-rv2p-06-6.0.15.fw
-File: bnx2/bnx2-rv2p-09-4.6.15.fw
-File: bnx2/bnx2-rv2p-09-5.0.0.j3.fw
-File: bnx2/bnx2-rv2p-09-5.0.0.j10.fw
 File: bnx2/bnx2-rv2p-09-6.0.17.fw
-File: bnx2/bnx2-rv2p-09ax-5.0.0.j3.fw
-File: bnx2/bnx2-rv2p-09ax-5.0.0.j10.fw
 File: bnx2/bnx2-rv2p-09ax-6.0.17.fw
 
 Licence: