Removed property tests for MatchersUtil#equals

These might be useful for a function with a more restricted domain. But for
equals, which accepts two of literally anything, the short run was too short
to catch any problems and the long run tended to exceed the CircleCi timeout.

.circleci/config.yml

@@ -58,13 +58,6 @@ jobs:
           name: Run tests
           command: npm test
 
-  # Warning: Sometimes takes a very long time (>25 minutes) on Circle.
-  # Probably not a good idea to run it from anything but a nightly.
-  test_node_with_long_property_tests:
-    <<: *test_node
-    environment:
-      JASMINE_LONG_PROPERTY_TESTS: y
-
   test_browsers: &test_browsers
     executor: node14
     environment:
@@ -133,10 +126,6 @@ workflows:
           name: test_node_16
           requires:
              - build_node_16
-      - test_node_with_long_property_tests:
-          executor: node14
-          requires:
-             - build_node_14
       - test_node:
           executor: node12
           name: test_node_12