doc: remove restriction on ixgbe vector support

[ upstream commit 0e26c9eb6b783aa2914c2a2b7ef0918bd82856be ]

The ixgbe driver has vector support for different architectures for a
while now.

Fixes: b20971b ("net/ixgbe: implement vector driver for ARM")

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>

doc/guides/nics/ixgbe.rst

@@ -16,8 +16,6 @@ The wider register gives space to hold multiple packet buffers so as to save ins
 There is no change to PMD API. The RX/TX handler are the only two entries for vPMD packet I/O.
 They are transparently registered at runtime RX/TX execution if all condition checks pass.
 
-1.  To date, only an SSE version of IX GBE vPMD is available.
-
 Some constraints apply as pre-conditions for specific optimizations on bulk packet transfers.
 The following sections explain RX and TX constraints in the vPMD.