Update delete error logs to use "Delete All Error Logs"

We are planning to delete 'Delete Error Logs' and replace with
the "Delete All Error Logs" as its the correct way to purge
existing error logs on the system.

Change-Id: I7d186c46e169ee5a8ba17a3d6c69be0949e845e6
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/tests/test_hardware_sensors.robot b/tests/test_hardware_sensors.robot
index eb7cc57..627be91 100644
--- a/tests/test_hardware_sensors.robot
+++ b/tests/test_hardware_sensors.robot
@@ -319,7 +319,7 @@
     # - Close all open SSH connections.
 
     FFDC On Test Case Fail
-    Delete Error Logs
+    Delete All Error Logs
     Close All Connections
 
 Power Redundancy Setting