Update PR template

pull_request_template.md

@@ -7,24 +7,12 @@
 ## Approach
 > Describe how you are implementing the solutions. Include an animated GIF or screenshot if the change affects the UI (email [email protected] to review all UI text). Include a link to a Markdown file or Google doc if the feature write-up is too long to paste here.
 
-## User stories
-> Summary of user stories addressed by this change>
-
 ## Release note
 > Brief description of the new feature or bug fix as it will appear in the release notes
 
 ## Documentation
 > Link(s) to product documentation that addresses the changes of this PR. If no doc impact, enter “N/A” plus brief explanation of why there’s no doc impact
 
-## Training
-> Link to the PR for changes to the training content in https://github.com/wso2/WSO2-Training, if applicable
-
-## Certification
-> Type “Sent” when you have provided new/updated certification questions, plus four answers for each question (correct answer highlighted in bold), based on this change. Certification questions/answers should be sent to [email protected] and NOT pasted in this PR. If there is no impact on certification exams, type “N/A” and explain why.
-
-## Marketing
-> Link to drafts of marketing content that will describe and promote this feature, including product page changes, technical articles, blog posts, videos, etc., if applicable
-
 ## Automation tests
  - Unit tests 
    > Code coverage information