Bug 1743230 - Temporarily stop building wpt docs due to bustage. CLOSED TREE r=ahal

The upstream use of jsdoc doesn't seem to work trivially in our setup and
is causing bustage. Just stop building those docs for now rather than backing
out the whole sync.

Differential Revision: https://phabricator.services.mozilla.com/D132405

docs/config.yml

@@ -45,7 +45,6 @@ categories:
         - testing/ci-configs
         - testing/marionette
         - testing/geckodriver
-        - web-platform
         - gtest
         - tools/fuzzing
         - tools/sanitizer

testing/web-platform/moz.build

@@ -774,4 +774,3 @@ with Files("tests/worklets/**"):
 with Files("tests/x-frame-options/**"):
     BUG_COMPONENT = ("Core", "DOM: Security")
 
-SPHINX_TREES["/web-platform"] = "tests/docs"