Remove start page-related commands and display logic (microsoft#16791)

* Remove start page related commands * Do not display the start page

Author: kimadeline

package.json

@@ -88,7 +88,6 @@
  "onCommand:python.switchToDailyChannel",
  "onCommand:python.switchToWeeklyChannel",
  "onCommand:python.clearWorkspaceInterpreter",
- "onCommand:python.startPage.open",
  "onCommand:python.enableSourceMapSupport",
  "onCommand:python.launchTensorBoard",
  "onCommand:python.clearPersistentStorage",
@@ -481,11 +480,6 @@
  "command": "python.sortImports",
  "title": "%python.command.python.sortImports.title%"
  },
- {
- "category": "Python",
- "command": "python.startPage.open",
- "title": "%python.command.python.startPage.open.title%"
- },
  {
  "category": "Python",
  "command": "python.startREPL",
@@ -1224,12 +1218,6 @@
  "scope": "resource",
  "type": "string"
  },
- "python.showStartPage": {
- "default": true,
- "description": "Show the Python Start Page when a new update is released.",
- "scope": "application",
- "type": "boolean"
- },
  "python.sortImports.args": {
  "default": [],
  "description": "Arguments passed in. Each argument is a separate item in the array.",
@@ -1954,11 +1942,6 @@
  "title": "Run",
  "when": "config.noExists"
  },
- {
- "category": "Python",
- "command": "python.startPage.open",
- "title": "%python.command.python.startPage.open.title%"
- },
  {
  "category": "Python",
  "command": "python.stopTests",

src/client/common/startPage/startPage.ts

@@ -90,9 +90,7 @@ export class StartPage extends WebviewPanelHost<IStartPageMapping>
  public async activate(): Promise<void> {
  if (this.appEnvironment.uiKind === UIKind.Web) {
  // We're running in Codespaces browser-based editor, do not open start page.
- return;
  }
- this.activateBackground().ignoreErrors();
  }
 
  public dispose(): Promise<void> {
@@ -301,21 +299,6 @@ export class StartPage extends WebviewPanelHost<IStartPageMapping>
  return shouldShowStartPage;
  }
 
- private async activateBackground(): Promise<void> {
- const settings = this.configuration.getSettings();
-
- if (settings.showStartPage && this.appEnvironment.extensionChannel === 'stable') {
- // extesionVersionChanged() reads CHANGELOG.md
- // So we use separate if's to try and avoid reading a file every time
- const firstTimeOrUpdate = await this.extensionVersionChanged();
-
- if (firstTimeOrUpdate) {
- this.firstTime = true;
- this.open().ignoreErrors();
- }
- }
- }
-
  // eslint-disable-next-line class-methods-use-this
  private savedVersionisOlder(savedVersion: string, actualVersion: string): boolean {
  const saved = savedVersion.split('.');