Drop insidersChannel from the issue report (#18672)

Author: brettcannon

resources/report_issue_user_settings.json

@@ -111,6 +111,5 @@
         "enabled": true,
         "optInto": true,
         "optOutFrom": true
-    },
-    "insidersChannel": true
+    }
 }

src/test/common/application/commands/issueTemplateVenv1.md

@@ -32,8 +32,6 @@ experiments
 • optInto: []
 • optOutFrom: []
 
-insidersChannel: "off"
-
 venvPath: "<placeholder>"
 
 ```

src/test/common/application/commands/reportIssueCommand.unit.test.ts

@@ -55,7 +55,6 @@ suite('Report Issue Command', () => {
                 optInto: [],
                 optOutFrom: [],
             },
-            insidersChannel: 'off',
             initialize: true,
             venvPath: 'path',
             // eslint-disable-next-line @typescript-eslint/no-explicit-any