[VOL-2582] - Remove unused function, alreay collect log by keyword 'Collect Logs'

Change-Id: Iacff57ce6933d30190ff505d9b5773c1f25361d0
diff --git a/tests/functional/Voltha_FailureScenarios.robot b/tests/functional/Voltha_FailureScenarios.robot
index 740a6e4..eb242d0 100644
--- a/tests/functional/Voltha_FailureScenarios.robot
+++ b/tests/functional/Voltha_FailureScenarios.robot
@@ -170,7 +170,6 @@
     [Teardown]    Run Keywords    Collect Logs
     ...           AND             Stop Logging    PowerSwitch
     ...           AND             Announce Message    END TEST PowerSwitch
-    Start Log Capture    PowerSwitch    ${container_log_dir}
     Power Switch Connection Suite    ${web_power_switch.ip}    ${web_power_switch.user}    ${web_power_switch.password}
     FOR    ${I}    IN RANGE    0    ${num_onus}
         ${src}=    Set Variable    ${hosts.src[${I}]}