Moved SingleSkipPattern to spring-cloud-sleuth-autoconfiguration; fixes gh-1991

spring-cloud-sleuth-api/src/main/java/org/springframework/cloud/sleuth/autoconfig/SingleSkipPattern.java

@@ -1,37 +0,0 @@
-/*
- * Copyright 2013-2021 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.cloud.sleuth.autoconfig;
-
-import java.util.Optional;
-import java.util.regex.Pattern;
-
-/**
- * Provides a URL {@link Pattern} for spans that should be not sampled. The default
- * implementation will harvest all {@link SingleSkipPattern}s and combine them in a single
- * pattern
- *
- * @author Marcin Grzejszczak
- * @since 2.1.0
- */
-public interface SingleSkipPattern {
-
-	/**
-	 * @return optional pattern to skip
-	 */
-	Optional<Pattern> skipPattern();
-
-}