Disabled functional tests in ci since they are not set up

.circleci/config.yml

@@ -76,13 +76,14 @@ jobs:
       #    name: Functional tests with Firefox Beta
       #    command: FIREFOX_BINARY=/home/circleci/checkout/firefox-beta/firefox-bin npm run test:func && mkdir test/results/logs-beta && mv test/results/logs/* test/results/logs-beta/
 
-      - run:
-          name: Functional tests with Firefox Developer Edition
-          command: FIREFOX_BINARY=/home/circleci/checkout/firefox-devedition/firefox-bin npm run test:func && mkdir test/results/logs-devedition && mv test/results/logs/* test/results/logs-devedition/
-
-      - run:
-          name: Functional tests with Firefox Nightly
-          command: FIREFOX_BINARY=/home/circleci/checkout/firefox-nightly/firefox-bin npm run test:func && mkdir test/results/logs-nightly && mv test/results/logs/* test/results/logs-nightly/
+      # This study add-on has no functional tests
+      #- run:
+      #    name: Functional tests with Firefox Developer Edition
+      #    command: FIREFOX_BINARY=/home/circleci/checkout/firefox-devedition/firefox-bin npm run test:func && mkdir test/results/logs-devedition && mv test/results/logs/* test/results/logs-devedition/
+      #
+      #- run:
+      #    name: Functional tests with Firefox Nightly
+      #    command: FIREFOX_BINARY=/home/circleci/checkout/firefox-nightly/firefox-bin npm run test:func && mkdir test/results/logs-nightly && mv test/results/logs/* test/results/logs-nightly/
 
       - store_artifacts:
           path: "test/results"