Issue #17487: Apply RemoveUnusedPrivateMethods (#11165)

- checkstyle/checkstyle#17782

Co-authored-by: Vincent Potucek <[email protected]>

Author: Pankraz76

api/maven-api-core/src/main/java/org/apache/maven/api/feature/Features.java

@@ -19,7 +19,6 @@
 package org.apache.maven.api.feature;
 
 import java.util.Map;
-import java.util.Properties;
 
 import org.apache.maven.api.Constants;
 import org.apache.maven.api.annotations.Nullable;
@@ -55,10 +54,6 @@ public static boolean deployBuildPom(@Nullable Map<String, ?> userProperties) {
         return doGet(userProperties, Constants.MAVEN_DEPLOY_BUILD_POM, true);
     }
 
-    private static boolean doGet(Properties userProperties, String key, boolean def) {
-        return doGet(userProperties != null ? userProperties.get(key) : null, def);
-    }
-
     private static boolean doGet(Map<String, ?> userProperties, String key, boolean def) {
         return doGet(userProperties != null ? userProperties.get(key) : null, def);
     }

impl/maven-cli/src/test/java/org/apache/maven/cling/invoker/mvnup/goals/StrategyOrchestratorTest.java

@@ -24,7 +24,6 @@
 import java.util.Map;
 import java.util.Set;
 
-import org.apache.maven.api.cli.mvnup.UpgradeOptions;
 import org.apache.maven.cling.invoker.mvnup.UpgradeContext;
 import org.jdom2.Document;
 import org.junit.jupiter.api.BeforeEach;
@@ -61,14 +60,6 @@ private UpgradeContext createMockContext() {
         return TestUtils.createMockContext();
     }
 
-    private UpgradeContext createMockContext(UpgradeOptions options) {
-        return TestUtils.createMockContext(options);
-    }
-
-    private UpgradeOptions createDefaultOptions() {
-        return TestUtils.createDefaultOptions();
-    }
-
     @Nested
     @DisplayName("Strategy Execution")
     class StrategyExecutionTests {