travis: Remove explicit DPDK kmods configuration.

DPDK disabled kmods compilation in 20.02 [1].
Nothing left to be done on OVS side.

1: https://git.dpdk.org/dpdk/commit/?id=91a861e54164

Signed-off-by: David Marchand <david.marchand@redhat.com>
Signed-off-by: Ian Stokes <ian.stokes@intel.com>

.travis/linux-build.sh

@@ -129,10 +129,6 @@ function install_dpdk()
         export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$(pwd)/$TARGET/lib
     fi
 
-    # Disable building DPDK kernel modules. Not needed for OVS build or tests.
-    sed -i '/CONFIG_RTE_EAL_IGB_UIO=y/s/=y/=n/' build/.config
-    sed -i '/CONFIG_RTE_KNI_KMOD=y/s/=y/=n/' build/.config
-
     make -j4 CC=gcc EXTRA_CFLAGS='-fPIC'
     EXTRA_OPTS="$EXTRA_OPTS --with-dpdk=$(pwd)/build"
     echo "Installed DPDK source in $(pwd)"