Remove deprecated parts of proposed auth provider API

src/vs/vscode.proposed.d.ts

@@ -135,32 +135,12 @@ declare module 'vscode' {
 		 */
 		export function registerAuthenticationProvider(provider: AuthenticationProvider): Disposable;
 
-		/**
-		 * @deprecated - getSession should now trigger extension activation.
-		 * Fires with the provider id that was registered or unregistered.
-		 */
-		export const onDidChangeAuthenticationProviders: Event<AuthenticationProvidersChangeEvent>;
-
-		/**
-		 * @deprecated
-		 * The ids of the currently registered authentication providers.
-		 * @returns An array of the ids of authentication providers that are currently registered.
-		 */
-		export function getProviderIds(): Thenable<ReadonlyArray<string>>;
-
-		/**
-		 * @deprecated
-		 * An array of the ids of authentication providers that are currently registered.
-		 */
-		export const providerIds: ReadonlyArray<string>;
-
 		/**
 		 * An array of the information of authentication providers that are currently registered.
 		 */
 		export const providers: ReadonlyArray<AuthenticationProviderInformation>;
 
 		/**
-		 * @deprecated
 		* Logout of a specific session.
 		* @param providerId The id of the provider to use
 		* @param sessionId The session id to remove