Remove Twitter annotations from the Bioregistry (#1474)

As a follow-up to
#1088, this PR removes
Twitter annotations from the Bioregistry. A final data dump with
bioregistry-twitter annotations is at
https://gist.github.com/cthoyt/c5d31d8f2773cb7890953dffacfdfbd4.

Author: cthoyt

src/bioregistry/app/templates/highlights/twitter.html

@@ -30,9 +30,7 @@
 {% endmacro %}
 
 {% macro render_reference(reference) -%}
-    {% if reference.startswith("https://twitter.com") %}
-        <span class="badge badge-info">Tweet</span>
-    {% elif reference.startswith("https://github.com/") and "issues/" in reference %}
+    {% if reference.startswith("https://github.com/") and "issues/" in reference %}
         <span class="badge badge-info">GitHub Issue</span>
     {% elif reference.startswith("https://github.com/") and "pull" in reference %}
         <span class="badge badge-info">GitHub PR</span>

src/bioregistry/app/templates/macros.html

@@ -629,14 +629,9 @@ def json_schema() -> werkzeug.Response:
 
 
 @ui_blueprint.route("/highlights/twitter")
-def highlights_twitter() -> str:
-    """Render the twitter highlights page."""
-    twitters = defaultdict(list)
-    for resource in manager.registry.values():
-        twitter = resource.get_twitter()
-        if twitter:
-            twitters[twitter].append(resource)
-    return render_template("highlights/twitter.html", twitters=twitters)
+def highlights_twitter() -> flask.Response:
+    """Render a HTTP 410 Gone (forever) for twitter content, which is no longer supported."""
+    return flask.Response("twitter content is no longer tracked", status=410)
 
 
 @ui_blueprint.route("/highlights/relations")