Update pull request template to remove project requirements

Removed requirements for full project implementations from the pull request template.

.github/PULL_REQUEST_TEMPLATE.md

@@ -19,19 +19,6 @@ Provide a clear description of what this pull request does.
 - [ ] My changes do not introduce security vulnerabilities
 - [ ] I have read the CONTRIBUTING.md guidelines
 
-**For Full Project Implementations:**
-- [ ] Project includes `learn/` folder with all 5 required files:
-  - [ ] 00-OVERVIEW.md - Project intro and quick start
-  - [ ] 01-CONCEPTS.md - Security concepts and theory
-  - [ ] 02-ARCHITECTURE.md - System design and decisions
-  - [ ] 03-IMPLEMENTATION.md - Code walkthrough
-  - [ ] 04-CHALLENGES.md - Extension ideas
-- [ ] Educational documentation references actual code with `file:line` format
-- [ ] Includes real world examples (breaches, CVEs, incidents)
-- [ ] Uses ASCII diagrams where helpful
-- [ ] Follows writing guidelines in `.github/learn-folder-template/README.md`
-- [ ] Verified completeness with `.github/learn-folder-template/CHECKLIST.md`
-
 ## Related Issues
 
 Link any related issues here (e.g., "Fixes #123").