Update bug_report.md

.github/ISSUE_TEMPLATE/bug_report.md

@@ -20,19 +20,11 @@ Steps to reproduce the behavior:
 **Expected behavior**
 A clear and concise description of what you expected to happen.
 
-**Screenshots**
-If applicable, add screenshots to help explain your problem.
+**Flutter Version:**
+Run `flutter doctor` in terminal or powershell , and copy the outputs.
 
-**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]
+**Testing Platform:**
+Android or iOS?
 
 **Additional context**
 Add any other context about the problem here.