[js] remove more unused training types (#22753)

### Description

remove more unused training types

js/.eslintrc.js

@@ -198,19 +198,6 @@ module.exports = {
               '_OrtReleaseTensor',
               '_OrtRun',
               '_OrtRunWithBinding',
-              '_OrtTrainingCopyParametersFromBuffer',
-              '_OrtTrainingCopyParametersToBuffer',
-              '_OrtTrainingCreateSession',
-              '_OrtTrainingEvalStep',
-              '_OrtTrainingGetModelInputOutputCount',
-              '_OrtTrainingGetModelInputOutputName',
-              '_OrtTrainingGetParametersSize',
-              '_OrtTrainingLazyResetGrad',
-              '_OrtTrainingLoadCheckpoint',
-              '_OrtTrainingOptimizerStep',
-              '_OrtTrainingReleaseCheckpoint',
-              '_OrtTrainingReleaseSession',
-              '_OrtTrainingRunTrainStep',
             ],
           },
         ],

js/common/lib/backend.ts

@@ -3,7 +3,6 @@
 
 import { InferenceSession } from './inference-session.js';
 import { OnnxValue } from './onnx-value.js';
-import { TrainingSession } from './training-session.js';
 
 /**
  * @ignore
@@ -42,33 +41,6 @@ export interface InferenceSessionHandler extends SessionHandler {
   ): Promise<SessionHandler.ReturnType>;
 }
 
-/**
- * Represent a handler instance of a training inference session.
- *
- * @ignore
- */
-export interface TrainingSessionHandler extends SessionHandler {
-  readonly evalInputNames: readonly string[];
-  readonly evalOutputNames: readonly string[];
-
-  lazyResetGrad(): Promise<void>;
-  runTrainStep(
-    feeds: SessionHandler.FeedsType,
-    fetches: SessionHandler.FetchesType,
-    options: InferenceSession.RunOptions,
-  ): Promise<SessionHandler.ReturnType>;
-  runOptimizerStep(options: InferenceSession.RunOptions): Promise<void>;
-  runEvalStep(
-    feeds: SessionHandler.FeedsType,
-    fetches: SessionHandler.FetchesType,
-    options: InferenceSession.RunOptions,
-  ): Promise<SessionHandler.ReturnType>;
-
-  getParametersSize(trainableOnly: boolean): Promise<number>;
-  loadParametersBuffer(buffer: Uint8Array, trainableOnly: boolean): Promise<void>;
-  getContiguousParameters(trainableOnly: boolean): Promise<OnnxValue>;
-}
-
 /**
  * Represent a backend that provides implementation of model inferencing.
  *
@@ -84,14 +56,6 @@ export interface Backend {
     uriOrBuffer: string | Uint8Array,
     options?: InferenceSession.SessionOptions,
   ): Promise<InferenceSessionHandler>;
-
-  createTrainingSessionHandler?(
-    checkpointStateUriOrBuffer: TrainingSession.UriOrBuffer,
-    trainModelUriOrBuffer: TrainingSession.UriOrBuffer,
-    evalModelUriOrBuffer: TrainingSession.UriOrBuffer,
-    optimizerModelUriOrBuffer: TrainingSession.UriOrBuffer,
-    options: InferenceSession.SessionOptions,
-  ): Promise<TrainingSessionHandler>;
 }
 
 export { registerBackend } from './backend-impl.js';

js/common/lib/env.ts

@@ -14,7 +14,6 @@ export declare namespace Env {
      * If not modified, the filename of the .wasm file is:
      * - `ort-wasm-simd-threaded.wasm` for default build
      * - `ort-wasm-simd-threaded.jsep.wasm` for JSEP build (with WebGPU and WebNN)
-     * - `ort-training-wasm-simd-threaded.wasm` for training build
      */
     wasm?: URL | string;
     /**
@@ -25,7 +24,6 @@ export declare namespace Env {
      * If not modified, the filename of the .mjs file is:
      * - `ort-wasm-simd-threaded.mjs` for default build
      * - `ort-wasm-simd-threaded.jsep.mjs` for JSEP build (with WebGPU and WebNN)
-     * - `ort-training-wasm-simd-threaded.mjs` for training build
      */
     mjs?: URL | string;
   }

js/common/lib/index.ts

@@ -26,4 +26,3 @@ export * from './tensor-factory.js';
 export * from './trace.js';
 export * from './onnx-model.js';
 export * from './onnx-value.js';
-export * from './training-session.js';