HADOOP-18687. hadoop-auth: remove unnecessary dependency on json-smart (#5524)

Contributed by Michiel de Jong

hadoop-common-project/hadoop-auth/pom.xml

@@ -110,20 +110,8 @@
           <groupId>org.bouncycastle</groupId>
           <artifactId>bcprov-jdk15on</artifactId>
         </exclusion>
-        <!-- HACK.  Transitive dependency for nimbus-jose-jwt.  Needed for
-        packaging.  Please re-check this version when updating
-        nimbus-jose-jwt.  Please read HADOOP-14903 for more details.
-        -->
-        <exclusion>
-          <groupId>net.minidev</groupId>
-          <artifactId>json-smart</artifactId>
-        </exclusion>
       </exclusions>
     </dependency>
-    <dependency>
-      <groupId>net.minidev</groupId>
-      <artifactId>json-smart</artifactId>
-    </dependency>
     <dependency>
       <groupId>org.apache.zookeeper</groupId>
       <artifactId>zookeeper</artifactId>

hadoop-project/pom.xml

@@ -1730,10 +1730,6 @@
       </dependency>
 
       <dependency>
-        <!-- HACK.  Transitive dependency for nimbus-jose-jwt.  Needed for
-             packaging.  Please re-check this version when updating
-             nimbus-jose-jwt.  Please read HADOOP-14903 for more details.
-          -->
         <groupId>net.minidev</groupId>
         <artifactId>json-smart</artifactId>
         <version>${json-smart.version}</version>