Remove the api_key component that was not being used on a few pages but imported.

app/templates/views/api/index.html

@@ -1,6 +1,5 @@
 {% extends "withnav_template.html" %}
 {% from "components/table.html" import list_table, field, hidden_field_heading %}
-{% from "components/api-key.html" import api_key %}
 {% from "components/banner.html" import banner_wrapper %}
 {% from "components/message-count-label.html" import message_count_label %}