clean bug template

Author: floriankrb

.github/ISSUE_TEMPLATE/bug_report.md

@@ -9,12 +9,15 @@ assignees: ''
 **Describe the bug**
 A clear and concise description of what the bug is.
 
+** Version number **
+I am using the following versions/branch/sha1 of the anemoi packages
+(alternatively the output of `pip freeze`)
+
 **To Reproduce**
 Steps to reproduce the behavior:
 1. Go to '...'
-2. Click on '....'
-3. Scroll down to '....'
-4. See error
+2. Run this '....'
+3. See error
 
 **URL to sample input data**
 Provide a URL to a sample input data, or attach a file to that report if it is small enough.
@@ -25,16 +28,5 @@ A clear and concise description of what you expected to happen.
 **Screenshots**
 If applicable, add screenshots to help explain your problem.
 
-**Desktop (please complete the following information):**
- - OS: [e.g. iOS]
- - Browser [e.g. chrome, safari]
- - Version [e.g. 22]
-
-**Smartphone (please complete the following information):**
- - Device: [e.g. iPhone6]
- - OS: [e.g. iOS8.1]
- - Browser [e.g. stock browser, safari]
- - Version [e.g. 22]
-
 **Additional context**
 Add any other context about the problem here.