Removing log collection from voltha-dt-physical-functional-tests.groovy as they are already collected in the tests

Change-Id: Id3d0d074c7ae13a4b12e87fee46febb272aa2813
diff --git a/vars/startComponentsLogs.groovy b/vars/startComponentsLogs.groovy
index 4cea1d2..a485be4 100644
--- a/vars/startComponentsLogs.groovy
+++ b/vars/startComponentsLogs.groovy
@@ -47,7 +47,7 @@
             def tag = "${tagPrefix}-kail-${logFile}"
             println "Starting logging process for label: ${label}"
             sh """
-            _TAG=${tag} kail -l ${label} --since 1h > ${cfg.logsDir}/${logFile}.log&
+            _TAG=${tag} kail -l ${label} > ${cfg.logsDir}/${logFile}.log&
             """
         }
     }