remove PR lockdown

.github/PULL_REQUEST_TEMPLATE.md

@@ -11,20 +11,6 @@
         A strong community means a strong and better product for everyone.
 -->
 
-<!--
-        📣 IMPORTANT NOTICE - PR LOCK DOWN 🔒    04/2022
-        We are excited to announce that fabric is migrating to modern typescript/javascript 🤩.
-        This means we will ⛔ not be accepting any PRs out of scope with the migration.
-        We understand this might be annoying but wasted work is ever more so.
-        The migration will be extreme on the source code so PRs from before will probably become stale to the point of death after the migration.
-        It hurts us the throw away good work, effort and time put into fabric so please stay patient.
-        You are welcome to join the migration effort 🔨
-        https://github.com/fabricjs/fabric.js/issues/7596
-
-        If you remain strong minded about PRing and the fix is small you can submit a PR to the 5.x branch
-        During the migration we will port these changes to master
--->
-
 ## Motivation
 
 <!-- Why you are proposing -->