Remove 2 unused fields.

Author: PerBothner

src/common/Types.ts

@@ -456,8 +456,6 @@ export type IColorEvent = (IColorReportRequest | IColorSetRequest | IColorRestor
  */
 export interface IInputHandler {
   onTitleChange: Event<string>;
-  readonly unicodeService: IUnicodeService;
-  precedingJoinState: number;
 
   parse(data: string | Uint8Array, promiseResult?: boolean): void | Promise<boolean>;
   print(data: Uint32Array, start: number, end: number): void;