Polish

See gh-21286

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/reactive/error/DefaultErrorWebExceptionHandlerIntegrationTests.java

@@ -141,20 +141,6 @@ class DefaultErrorWebExceptionHandlerIntegrationTests {
 				});
 	}
 
-	@Test
-	void includeStackTraceOnTraceParam() {
-		this.contextRunner.withPropertyValues("server.error.include-exception=true",
-				"server.error.include-stacktrace=on-trace-param").run((context) -> {
-					WebTestClient client = getWebClient(context);
-					client.get().uri("/?trace=true").exchange().expectStatus()
-							.isEqualTo(HttpStatus.INTERNAL_SERVER_ERROR).expectBody().jsonPath("status")
-							.isEqualTo("500").jsonPath("error")
-							.isEqualTo(HttpStatus.INTERNAL_SERVER_ERROR.getReasonPhrase()).jsonPath("exception")
-							.isEqualTo(IllegalStateException.class.getName()).jsonPath("trace").exists()
-							.jsonPath("requestId").isEqualTo(this.logIdFilter.getLogId());
-				});
-	}
-
 	@Test
 	void includeStackTraceOnParam() {
 		this.contextRunner