Mark ClientHttpResponse::getRawStatusCode for removal

spring-test/src/main/java/org/springframework/mock/http/client/MockClientHttpResponse.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 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.
@@ -90,12 +90,6 @@ public class MockClientHttpResponse extends MockHttpInputMessage implements Clie
 		return this.statusCode;
 	}
 
-	@Override
-	@Deprecated
-	public int getRawStatusCode() {
-		return this.statusCode.value();
-	}
-
 	@Override
 	public String getStatusText() {
 		return (this.statusCode instanceof HttpStatus status ? status.getReasonPhrase() : "");