Removed scheduled workflows from Circle CI config

Scheduled pipelines (configured via the Circle web UI) will be used instead.

.circleci/config.yml

@@ -97,49 +97,6 @@ jobs:
 
 workflows:
   version: 2
-  cron:
-    triggers:
-      - schedule:
-          # Times are UTC.
-          cron: "0 11 * * *"
-          filters:
-            branches:
-               only:
-                 - main
-    jobs:
-      - build:
-          executor: node16
-          name: build_node_16
-      - build:
-          executor: node14
-          name: build_node_14
-      - build:
-          executor: node12_latest
-          name: build_node_12_latest
-      - build:
-          executor: node12_17
-          name: build_node_12_17
-      - test_node:
-          executor: node16
-          name: test_node_16
-          requires:
-             - build_node_16
-      - test_node:
-          executor: node12_latest
-          name: test_node_12_latest
-          requires:
-             - build_node_12_latest
-      - test_node:
-          executor: node12_17
-          name: test_node_12_17
-          requires:
-             - build_node_12_17
-      - test_browsers:
-          requires:
-             - build_node_14
-          filters:
-            branches:
-              ignore: /pull\/.*/ # Don't run on pull requests.
 
   push:
     jobs:
@@ -183,14 +140,6 @@ workflows:
               ignore: /pull\/.*/ # Don't run on pull requests.
 
   browser-flakes:
-    triggers:
-    - schedule:
-        # Times are UTC.
-        cron: "0 10 * * *"
-        filters:
-          branches:
-            only:
-            - browser-flakes
     jobs:
     - build:
         executor: node14