src/vs/workbench/services/extensionManagement/browser/extensionEnablementService.ts/ExtensionsManager/onDidUninstallExtension
class ExtensionsManager:	private onDidUninstallExtension(identifier: IExtensionIdentifier, server: IExtensionManagementServer): void {
		const index = this._extensions.findIndex(e => areSameExtensions(e.identifier, identifier) && this.extensionManagementServerService.getExtensionManagementServer(e) === server);
		if (index !== -1) {
			const removed = this._extensions.splice(index, 1);
			this._onDidChangeExtensions.fire({ added: [], removed });
		}
	}