Depre copilot4prs. (#4418)

Signed-off-by: zzjin <tczzjin@gmail.com>

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,13 +1,6 @@
-copilot:all
 <!-- 
 If you are developing a feature, please provide documentation.
 If you are solving a bug, please associate the corresponding issue.
 Please standardize the title and introduction information of the PR, 
-because it will be placed in the release note
-
-If using copilot4prs, please add the following information:
-- `copilot:all` all the content, in one go!
-- `copilot:summary` a one-paragraph summary of the changes in the pull request.
-- `copilot:walkthrough` a detailed list of changes, including links to the relevant pieces of code.
-- `copilot:poem` a poem about the changes in the pull request.
+because it will be placed in the release note.
 -->