Update pull request template to streamline structure

Removed the Environment Details section to simplify the template and focus on relevant information. This ensures contributors provide concise and necessary details.

Author: HichemTab-tech

.github/PULL_REQUEST_TEMPLATE.md

@@ -3,10 +3,5 @@
 ## Description
 <!-- Briefly describe your changes. -->
 
-## Environment Details
-- **OS:**
-- **PHP Version:**
-- **LaravelFS Version:**
-
 ## Additional Notes
 <!-- Add any extra details if needed. -->