Update bug_report.md

.github/ISSUE_TEMPLATE/bug_report.md

@@ -17,21 +17,11 @@ Steps to reproduce the behavior:
 3. Scroll down to '....'
 4. See error
 
-**Expected behavior**
-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**