Removed unused XPATH option from GUI suite variable

Changes:
    - Removed challenge password variable
      from variable section and test also.

Tested: -  Ran test successfully from
Change-Id: Ica0bcdb36fa70997c3a91ac213ffdc040ce008f5
Signed-off-by: rramyasr-in <rramyasr@in.ibm.com>
diff --git a/gui/gui_test/security_and_access_menu/test_certificates_sub_menu.robot b/gui/gui_test/security_and_access_menu/test_certificates_sub_menu.robot
index e2ad068..2081777 100644
--- a/gui/gui_test/security_and_access_menu/test_certificates_sub_menu.robot
+++ b/gui/gui_test/security_and_access_menu/test_certificates_sub_menu.robot
@@ -24,7 +24,6 @@
 ${xpath_input_company_name}        //*[@data-test-id='modalGenerateCsr-input-companyName']
 ${xpath_input_company_unit}        //*[@data-test-id='modalGenerateCsr-input-companyUnit']
 ${xpath_input_common_name}         //*[@data-test-id='modalGenerateCsr-input-commonName']
-${xpath_input_challenge_password}  //*[@data-test-id='modalGenerateCsr-input-challengePassword']
 ${xpath_input_contact_person}      //*[@data-test-id='modalGenerateCsr-input-contactPerson']
 ${xpath_input_email_address}       //*[@data-test-id='modalGenerateCsr-input-emailAddress']
 ${xpath_generate_csr_submit}       //*[@data-test-id='modalGenerateCsr-button-ok']
@@ -72,7 +71,6 @@
     Page Should Contain Element  ${xpath_input_city}
     Page Should Contain Element  ${xpath_input_company_name}
     Page Should Contain Element  ${xpath_input_common_name}
-    Page Should Contain Element  ${xpath_input_challenge_password}
     Page Should Contain Element  ${xpath_input_contact_person}
     Page Should Contain Element  ${xpath_input_email_address}
     Page Should Contain Element  ${xpath_input_alternate_name}