[PATCH] doc: remove references to obsolete testpmd flag

[Ciara Loftus <ciara.loftus@intel.com>]

The packet-filter-mode flag was removed in a previous commit. Remove
references to it in the documentation.

Fixes: 5007ac13189d ("ethdev: remove deprecated Flow Director configuration")
Cc: stable@dpdk.org

Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
---
 doc/guides/nics/i40e.rst | 4 ++--
 doc/guides/nics/igc.rst  | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/doc/guides/nics/i40e.rst b/doc/guides/nics/i40e.rst
index 0b6527b4ed..0c52807f26 100644
--- a/doc/guides/nics/i40e.rst
+++ b/doc/guides/nics/i40e.rst
@@ -436,12 +436,12 @@ The default input set of each flow type is::
 
 The flex payload is selected from offset 0 to 15 of packet's payload by default, while it is masked out from matching.
 
-Start ``testpmd`` with ``--disable-rss`` and ``--pkt-filter-mode=perfect``:
+Start ``testpmd`` with ``--disable-rss``:
 
 .. code-block:: console
 
    ./<build_dir>/app/dpdk-testpmd -l 0-15 -- -i --disable-rss \
-                 --pkt-filter-mode=perfect --rxq=8 --txq=8 --nb-cores=8 \
+                 --rxq=8 --txq=8 --nb-cores=8 \
                  --nb-ports=1
 
 Add a rule to direct ``ipv4-udp`` packet whose ``dst_ip=2.2.2.5, src_ip=2.2.2.3, src_port=32, dst_port=32`` to queue 1:
diff --git a/doc/guides/nics/igc.rst b/doc/guides/nics/igc.rst
index 9790b58102..d19a572b83 100644
--- a/doc/guides/nics/igc.rst
+++ b/doc/guides/nics/igc.rst
@@ -79,7 +79,7 @@ Start ``testpmd``:
 
 .. code-block:: console
 
-   ./dpdk-testpmd -l 4-8 -- i --rxq=4 --txq=4 --pkt-filter-mode=perfect --disable-rss
+   ./dpdk-testpmd -l 4-8 -- i --rxq=4 --txq=4 --disable-rss
 
 Add a rule to direct packet whose ``ether-type=0x801`` to queue 1:
 
-- 
2.43.0