Don't fire PtyService.onDidChangeProperty twice

Fixes microsoft#185396

Author: Tyriar

src/vs/platform/terminal/node/ptyService.ts

@@ -270,7 +270,6 @@ export class PtyService extends Disposable implements IPtyService {
 			options
 		};
 		const persistentProcess = new PersistentTerminalProcess(id, process, workspaceId, workspaceName, shouldPersist, cols, rows, processLaunchOptions, unicodeVersion, this._reconnectConstants, this._logService, isReviving && typeof shellLaunchConfig.initialText === 'string' ? shellLaunchConfig.initialText : undefined, rawReviveBuffer, shellLaunchConfig.icon, shellLaunchConfig.color, shellLaunchConfig.name, shellLaunchConfig.fixedDimensions);
-		process.onDidChangeProperty(property => this._onDidChangeProperty.fire({ id, property }));
 		process.onProcessExit(event => {
 			persistentProcess.dispose();
 			this._ptys.delete(id);