chore: removes Reviewers list from PR template

We tag reviewers in github now.

.github/PULL_REQUEST_TEMPLATE.md

@@ -4,15 +4,10 @@
 
 **Dependencies:** dependencies on other outstanding PRs, issues, etc. 
 
-**Installation instructions:** List any non-trivial installation 
-instructions.
+**Installation instructions:** List any non-trivial installation instructions.
 
 **Testing instructions:** List testing instructions
 
-**Reviewers:**
-- [ ] tag reviewer 
-- [ ] tag reviewer 
-
 **Merge checklist:**
 - [ ] All reviewers approved
 - [ ] CI build is green
@@ -23,6 +18,5 @@ instructions.
 
 **Post merge:**
 - [ ] Create a tag
-- [ ] Check new version is pushed to PyPi after tag-triggered build is 
-      finished.
+- [ ] Check new version is pushed to PyPi after tag-triggered build is finished.
 - [ ] Delete working branch (if not needed anymore)