chore(ci): Remove type from canary failure template (#15698)

Apparently `type` is not yet supported by
https://github.com/JasonEtco/create-an-issue

ref #15562

Author: chargome

.github/CANARY_FAILURE_TEMPLATE.md

@@ -1,7 +1,6 @@
 ---
 title: '{{ env.TITLE }}'
 labels: 'Type: Tests, Waiting for: Product Owner'
-type: 'task'
 ---
 
 Canary tests failed: {{ env.RUN_LINK }}