Delete error logs from BMC on cleanup

Resolves  openbmc/openbmc-test-automation#880

Change-Id: I9745d9daf3c522eb5629e5d4cb4f9aaca3399930
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/extended/standby_bmc.robot b/extended/standby_bmc.robot
index 82c2ece..effcf40 100644
--- a/extended/standby_bmc.robot
+++ b/extended/standby_bmc.robot
@@ -61,6 +61,7 @@
     Run Keyword If  '${CLEANUP_DIR_PATH}' != '${EMPTY}' and ${rc} == 0
     ...  Cleanup Dir
 
+    Delete Error Logs
 
 *** Keywords ***