Specify trex mode when invoking linerate tests

Change-Id: Id23032493e416e7901da7b1c56fca3ad51a73857
diff --git a/jjb/pipeline/fabric-tna-hardware.groovy b/jjb/pipeline/fabric-tna-hardware.groovy
index 45ba7a2..1318c0b 100644
--- a/jjb/pipeline/fabric-tna-hardware.groovy
+++ b/jjb/pipeline/fabric-tna-hardware.groovy
@@ -71,7 +71,7 @@
                 script {
                     withDockerRegistry([url: "https://registry.opennetworking.org", credentialsId: "onf-internal-registry"]) {
                         sh returnStdout: false, label: "Run tests in sw mode", script: """
-                            PROFILE=${params.PROFILE} SWITCH_ADDR=${SWITCH_ADDR} TREX_PARAMS="--trex-sw-mode" PTF_FILTER="trex-sw-mode" bash .jenkins/linerate.sh
+                            PROFILE=${params.PROFILE} SWITCH_ADDR=${SWITCH_ADDR} TREX_PARAMS="--trex-sw-mode" bash .jenkins/linerate.sh
                         """
                     }
                 }