Remove image banner smoke test

See gh-28883

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-animated-banner/build.gradle

@@ -1,10 +0,0 @@
-plugins {
-	id "java"
-	id "org.springframework.boot.conventions"
-}
-
-description = "Spring Boot animated banner smoke test"
-
-dependencies {
-	implementation(project(":spring-boot-project:spring-boot-starters:spring-boot-starter"))
-}

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-animated-banner/src/main/java/smoketest/animated/SampleAnimatedBannerApplication.java

@@ -1,29 +0,0 @@
-/*
- * Copyright 2012-2019 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
- *
- *      https://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 smoketest.animated;
-
-import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.SpringBootApplication;
-
-@SpringBootApplication
-public class SampleAnimatedBannerApplication {
-
-	public static void main(String[] args) {
-		SpringApplication.run(SampleAnimatedBannerApplication.class, args);
-	}
-
-}

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-animated-banner/src/main/resources/application.properties

@@ -1,2 +0,0 @@
-spring.banner.image.bitdepth=8
-spring.banner.image.pixelmode=block