Moved UnsupportedMediaTypeException

Moved UnsupportedMediaTypeException next to Body[Inserters|Extractors],
as that is where they are used. This move should have been done as part
of the inserter and extractor move, but was forgotten.

spring-web/src/main/java/org/springframework/http/codec/UnsupportedMediaTypeException.java

@@ -1,74 +0,0 @@
-/*
- * Copyright 2002-2016 the original author or authors.
- *
- * 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 org.springframework.http.codec;
-
-import java.util.Collections;
-import java.util.List;
-import java.util.Optional;
-
-import org.springframework.core.NestedRuntimeException;
-import org.springframework.http.MediaType;
-
-/**
- * Exception thrown to indicate that a {@code Content-Type} is not supported.
- *
- * @author Arjen Poutsma
- * @since 5.0
- */
-@SuppressWarnings("serial")
-public class UnsupportedMediaTypeException extends NestedRuntimeException {
-
-	private final MediaType contentType;
-
-	private final List<MediaType> supportedMediaTypes;
-
-
-	/**
-	 * Constructor for when the specified Content-Type is invalid.
-	 */
-	public UnsupportedMediaTypeException(String reason) {
-		super(reason);
-		this.contentType = null;
-		this.supportedMediaTypes = Collections.emptyList();
-	}
-
-	/**
-	 * Constructor for when the Content-Type can be parsed but is not supported.
-	 */
-	public UnsupportedMediaTypeException(MediaType contentType, List<MediaType> supportedMediaTypes) {
-		super("Content type '" + contentType + "' not supported");
-		this.contentType = contentType;
-		this.supportedMediaTypes = Collections.unmodifiableList(supportedMediaTypes);
-	}
-
-
-	/**
-	 * Return the request Content-Type header if it was parsed successfully.
-	 */
-	public Optional<MediaType> getContentType() {
-		return Optional.ofNullable(this.contentType);
-	}
-
-	/**
-	 * Return the list of supported content types in cases when the Content-Type
-	 * header is parsed but not supported, or an empty list otherwise.
-	 */
-	public List<MediaType> getSupportedMediaTypes() {
-		return this.supportedMediaTypes;
-	}
-
-}