chore(github-templates): remove not relevant bits from autogenerated templates

.github/ISSUE_TEMPLATE.md

@@ -9,7 +9,6 @@ IF SUFFICIENT INFORMATION IS NOT PROVIDED VIA THE FOLLOWING TEMPLATE THE ISSUE M
 - [ ] bug report -> please search issues before submitting
 - [ ] feature request
 - [ ] documentation issue or request
-- [ ] regression (a behavior that used to work and stopped in a new release)
 ```
 
 ### Minimal steps to reproduce
@@ -21,9 +20,6 @@ IF SUFFICIENT INFORMATION IS NOT PROVIDED VIA THE FOLLOWING TEMPLATE THE ISSUE M
 ### Expected/desired behavior
 >
 
-### OS and Version?
-> Windows 7, 8 or 10. Linux (which distribution). macOS (Yosemite? El Capitan? Sierra?)
-
 ### Versions
 >
 

.github/PULL_REQUEST_TEMPLATE.md

@@ -29,7 +29,7 @@ What kind of change does this Pull Request introduce?
 git clone [repo-address]
 cd [repo-name]
 git checkout [branch-name]
-npm install
+…
 ```
 
 * Test the code