Remove unused exception class.

library/src/main/java/com/google/android/exoplayer/upstream/UnexpectedLengthException.java

-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.google.android.exoplayer.upstream;
-
-import java.io.IOException;
-
-/**
- * Thrown when the length of some data does not match an expected length.
- */
-@Deprecated
-public final class UnexpectedLengthException extends IOException {
-
-  /**
-   * The length that was expected, in bytes.
-   */
-  public final long expectedLength;
-
-  /**
-   * The actual length encountered, in bytes.
-   */
-  public final long actualLength;
-
-  /**
-   * @param expectedLength The length that was expected, in bytes.
-   * @param actualLength The actual length encountered, in bytes.
-   */
-  public UnexpectedLengthException(long expectedLength, long actualLength) {
-    super("Expected: " + expectedLength + ", got: " + actualLength);
-    this.expectedLength = expectedLength;
-    this.actualLength = actualLength;
-  }
-
-}