Deprecated tests directory

Changes:
    - Remove targeting tests directory

Reference: openbmc/openbmc-test-automation#test-layout

Tested: - NA, since the HW_CI test does not pick any test cases
      from tests directory anymore.
      Refer:
      openbmc/openbmc-test-automation/blob/master/test_lists/HW_CI
Change-Id: I7a5afbd356357cd19058d92eeec898972b491f6d
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/scripts/run-robot.sh b/scripts/run-robot.sh
index 357608e..0d70385 100755
--- a/scripts/run-robot.sh
+++ b/scripts/run-robot.sh
@@ -25,7 +25,7 @@
     -v SSH_PORT:${SSH_PORT}\
     -v HTTPS_PORT:${HTTPS_PORT}\
     -v REDFISH_SUPPORT_TRANS_STATE:1\
-    --argumentfile ./test_lists/QEMU_CI ./tests ./redfish ./ipmi"}"
+    --argumentfile ./test_lists/QEMU_CI ./redfish ./ipmi"}"
 
 git clone https://github.com/openbmc/openbmc-test-automation.git \
     "${ROBOT_CODE_HOME}"