Remove deprecated code

Closes gh-29290

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/plugin/MavenPluginActionIntegrationTests.java

@@ -1,45 +0,0 @@
-/*
- * Copyright 2012-2021 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 org.springframework.boot.gradle.plugin;
-
-import org.junit.jupiter.api.TestTemplate;
-import org.junit.jupiter.api.condition.DisabledForJreRange;
-import org.junit.jupiter.api.condition.JRE;
-
-import org.springframework.boot.gradle.junit.GradleCompatibility;
-import org.springframework.boot.testsupport.gradle.testkit.GradleBuild;
-
-import static org.assertj.core.api.Assertions.assertThat;
-
-/**
- * Integration tests for {@link MavenPluginAction}.
- *
- * @author Andy Wilkinson
- */
-@DisabledForJreRange(min = JRE.JAVA_16)
-@GradleCompatibility(versionsLessThan = "7.0-milestone-1")
-class MavenPluginActionIntegrationTests {
-
-	GradleBuild gradleBuild;
-
-	@TestTemplate
-	void clearsConf2ScopeMappingsOfUploadBootArchivesTask() {
-		assertThat(this.gradleBuild.expectDeprecationWarningsWithAtLeastVersion("6.0.0").build("conf2ScopeMappings")
-				.getOutput()).contains("Conf2ScopeMappings = 0");
-	}
-
-}