Remove publicOptions completely

src/common/TestUtils.test.ts

@@ -121,20 +121,17 @@ export class MockLogService implements ILogService {
 export class MockOptionsService implements IOptionsService {
   public serviceBrand: any;
   public options: ITerminalOptions = clone(DEFAULT_OPTIONS);
-  public publicOptions: ITerminalOptions = clone(DEFAULT_OPTIONS);
   public onOptionChange: IEvent<string> = new EventEmitter<string>().event;
   constructor(testOptions?: Partial<ITerminalOptions>) {
     if (testOptions) {
       for (const key of Object.keys(testOptions)) {
         this.options[key] = testOptions[key];
-        this.publicOptions[key] = testOptions[key];
       }
     }
   }
   public setOptions(options: ITerminalOptions): void {
     for (const key of Object.keys(options)) {
       this.options[key] = options[key];
-      this.publicOptions[key] = options[key];
     }
   }
   public setOption<T>(key: string, value: T): void {