Remove 'game' field from bug report template

The 'game' field was removed from the bug report template as it is no longer required. This simplifies the template and makes it easier for users to file reports.

Author: Daniil Krizhanovskyi

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -35,13 +35,6 @@ body:
         - Standalone Mono
     validations:
       required: true
-  - type: textarea
-    id: game
-    attributes:
-      label: Which game did this occur on?
-      description: Please tell us the name of the game. If it's a personal or private project, just let us know the Unity version.
-    validations:
-      required: true
   - type: textarea
     id: what-happened
     attributes: