YARN-11535. Remove jackson-dataformat-yaml dependency. (#5970)

hadoop-hdfs-project/hadoop-hdfs-client/pom.xml

@@ -115,6 +115,10 @@ https://maven.apache.org/xsd/maven-4.0.0.xsd">
           <groupId>io.netty</groupId>
           <artifactId>netty-transport</artifactId>
         </exclusion>
+        <exclusion>
+          <groupId>com.fasterxml.jackson.dataformat</groupId>
+          <artifactId>jackson-dataformat-yaml</artifactId>
+        </exclusion>
       </exclusions>
     </dependency>
     <dependency>

hadoop-project/pom.xml

@@ -1300,11 +1300,6 @@
         <artifactId>jackson-dataformat-cbor</artifactId>
         <version>${jackson2.version}</version>
       </dependency>
-      <dependency>
-        <groupId>com.fasterxml.jackson.dataformat</groupId>
-        <artifactId>jackson-dataformat-yaml</artifactId>
-        <version>${jackson2.version}</version>
-      </dependency>
       <dependency>
         <groupId>org.mockito</groupId>
         <artifactId>mockito-core</artifactId>

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/pom.xml

@@ -330,10 +330,6 @@
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-databind</artifactId>
      </dependency>
-     <dependency>
-         <groupId>com.fasterxml.jackson.dataformat</groupId>
-         <artifactId>jackson-dataformat-yaml</artifactId>
-     </dependency>
   </dependencies>
 
   <build>