Delete Toml class

See gh-21129

spring-boot-project/spring-boot-tools/spring-boot-buildpack-platform/src/test/java/org/springframework/boot/buildpack/platform/toml/TomlTests.java

@@ -1,43 +0,0 @@
-/*
- * Copyright 2012-2020 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.buildpack.platform.toml;
-
-import org.junit.jupiter.api.Test;
-
-import static org.assertj.core.api.Assertions.assertThat;
-
-/**
- * Tests for {@link Toml}.
- *
- * @author Phillip Webb
- */
-class TomlTests {
-
-	@Test
-	void createsTomlMarkup() {
-		Toml toml = new Toml();
-		toml.table("run-image");
-		toml.string("image", "cnb/test");
-		toml.array("mirrors", "a", "b", "c");
-		String expected = "";
-		expected += "[run-image]\n";
-		expected += "image = \"cnb/test\"\n";
-		expected += "mirrors = [\"a\", \"b\", \"c\"]\n";
-		assertThat(toml.toString()).isEqualTo(expected);
-	}
-
-}