HADOOP-15938. [JDK 11] Remove animal-sniffer-maven-plugin to fix build. Contributed by Dinesh Chitlangia.

hadoop-project/pom.xml

@@ -1686,35 +1686,6 @@
           </execution>
         </executions>
       </plugin>
-      <plugin>
-        <groupId>org.codehaus.mojo</groupId>
-        <artifactId>animal-sniffer-maven-plugin</artifactId>
-        <version>1.16</version>
-        <executions>
-          <execution>
-            <id>signature-check</id>
-            <phase>verify</phase>
-            <goals>
-              <goal>check</goal>
-            </goals>
-          </execution>
-        </executions>
-        <configuration>
-          <signature>
-            <groupId>org.codehaus.mojo.signature</groupId>
-            <artifactId>java18</artifactId>
-            <version>1.0</version>
-          </signature>
-          <ignores>
-            <ignore>sun.misc.*</ignore>
-            <ignore>sun.net.*</ignore>
-            <ignore>sun.nio.ch.*</ignore>
-            <ignore>com.sun.javadoc.*</ignore>
-            <ignore>com.sun.tools.*</ignore>
-            <ignore>java.lang.invoke.*</ignore>
-          </ignores>
-        </configuration>
-      </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-antrun-plugin</artifactId>