[CI] remove mgmt_soc set 6 from allow_failures

.travis.yml

diff --git a/.travis.yml b/.travis.yml
index 6689f9c..9fb503d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -80,6 +80,3 @@
     - name: "The wb_utests DV Test: Set 2"
       install: bash .travisCI/utils/bash_run_wrapper.sh .travisCI/utils/pdkBuild.sh
       script: bash .travisCI/dv/dv-check-wrapper.sh wb_utests 2
-    - name: "The mgmt_soc DV Test: Set 6"
-      install: bash .travisCI/utils/bash_run_wrapper.sh .travisCI/utils/pdkBuild.sh
-      script: bash .travisCI/dv/dv-check-wrapper.sh mgmt_soc 6