Remove unusable variables

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/BetweennessCentralityAlgo.scala

@@ -19,8 +19,6 @@ import scala.collection.mutable.ListBuffer
 object BetweennessCentralityAlgo {
   private val LOGGER = Logger.getLogger(this.getClass)
 
-  val ALGORITHM: String = "BetweennessCentrality"
-
   /**
     * run the BetweennessCentrality algorithm for nebula graph
     */

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/BfsAlgo.scala

@@ -19,8 +19,6 @@ import org.apache.spark.sql.{DataFrame, Dataset, Row, SparkSession}
 object BfsAlgo {
   private val LOGGER = Logger.getLogger(this.getClass)
 
-  val ALGORITHM: String = "BFS"
-
   /**
     * run the louvain algorithm for nebula graph
     */

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/ClosenessAlgo.scala

@@ -16,7 +16,6 @@ import org.apache.spark.sql.{DataFrame, Dataset, Row, SparkSession}
 
 object ClosenessAlgo {
   private val LOGGER    = Logger.getLogger(this.getClass)
-  val ALGORITHM: String = "Closeness"
   type SPMap = Map[VertexId, Double]
 
   private def makeMap(x: (VertexId, Double)*) = Map(x: _*)

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/ClusteringCoefficientAlgo.scala

@@ -16,8 +16,6 @@ import org.apache.spark.sql.{DataFrame, Dataset, Row, SparkSession}
 object ClusteringCoefficientAlgo {
   private val LOGGER = Logger.getLogger(this.getClass)
 
-  val ALGORITHM: String = "ClusterCoefficientAlgo"
-
   /**
     * run the clusterCoefficient algorithm for nebula graph
     */

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/ConnectedComponentsAlgo.scala

@@ -18,8 +18,6 @@ import org.apache.spark.sql.{DataFrame, Dataset, Row, SparkSession}
 object ConnectedComponentsAlgo {
   private val LOGGER = Logger.getLogger(this.getClass)
 
-  val ALGORITHM: String = "ConnectedComponents"
-
   /**
     * run the ConnectedComponents algorithm for nebula graph
     */

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/DegreeStaticAlgo.scala

@@ -17,8 +17,6 @@ object DegreeStaticAlgo {
 
   private val LOGGER = Logger.getLogger(this.getClass)
 
-  val ALGORITHM: String = "DegreeStatic"
-
   /**
     * run the pagerank algorithm for nebula graph
     */

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/HanpAlgo.scala

@@ -18,8 +18,6 @@ import org.apache.spark.sql.{DataFrame, Dataset, Row, SparkSession}
   * The implementation of the algorithm refers to paper `Towards real-time community detection in large networks`.
   */
 object HanpAlgo {
-  val ALGORITHM: String = "Hanp"
-
   /**
     * run the Hanp algorithm for nebula graph
     */

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/JaccardAlgo.scala

@@ -24,8 +24,6 @@ import org.apache.spark.sql.types.{DoubleType, StringType, StructField, StructTy
 object JaccardAlgo {
   private val LOGGER = Logger.getLogger(this.getClass)
 
-  val ALGORITHM: String = "Jaccard"
-
   /**
     * run the Jaccard algorithm for nebula graph
     */

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/KCoreAlgo.scala

@@ -15,8 +15,6 @@ import org.apache.spark.sql.{DataFrame, Dataset, Row, SparkSession}
 object KCoreAlgo {
   private val LOGGER = Logger.getLogger(this.getClass)
 
-  val ALGORITHM: String = "KCore"
-
   /**
     * run the louvain algorithm for nebula graph
     */

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/LabelPropagationAlgo.scala

@@ -18,8 +18,6 @@ import org.apache.spark.sql.{DataFrame, Dataset, Row, SparkSession}
 object LabelPropagationAlgo {
   private val LOGGER = Logger.getLogger(this.getClass)
 
-  val ALGORITHM: String = "LabelPropagation"
-
   /**
     * run the LabelPropagation algorithm for nebula graph
     */

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/LouvainAlgo.scala

@@ -20,8 +20,6 @@ import scala.collection.mutable.{HashMap, HashSet}
 object LouvainAlgo {
   private val LOGGER = Logger.getLogger(this.getClass)
 
-  val ALGORITHM: String = "Louvain"
-
   /**
     * run the louvain algorithm for nebula graph
     */

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/Node2vecAlgo.scala

@@ -33,7 +33,6 @@ case class EdgeAttr(var dstNeighbors: Array[Long] = Array.empty[Long],
   * Here is the code url https://github.com/aditya-grover/node2vec.git.
   */
 object Node2vecAlgo {
-  val ALGORITHM: String                               = "Node2vec"
   var node2vecConfig: Node2vecConfig                  = _
   var context: SparkContext                           = _
   var indexedEdges: RDD[Edge[EdgeAttr]]               = _

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/PageRankAlgo.scala

@@ -17,8 +17,6 @@ import org.apache.spark.sql.{DataFrame, Dataset, Row, SparkSession}
 object PageRankAlgo {
   private val LOGGER = Logger.getLogger(this.getClass)
 
-  val ALGORITHM: String = "PageRank"
-
   /**
     * run the pagerank algorithm for nebula graph
     */

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/ShortestPathAlgo.scala

@@ -21,8 +21,6 @@ import org.apache.spark.sql.{DataFrame, Dataset, Row, SparkSession}
 object ShortestPathAlgo {
   private val LOGGER = Logger.getLogger(this.getClass)
 
-  val ALGORITHM: String = "ShortestPath"
-
   /**
     * run the ShortestPath algorithm for nebula graph
     */

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/StronglyConnectedComponentsAlgo.scala

@@ -16,8 +16,6 @@ import org.apache.spark.sql.types.{LongType, StructField, StructType}
 
 object StronglyConnectedComponentsAlgo {
 
-  val ALGORITHM: String = "StronglyConnectedComponents"
-
   /**
     * run the StronglyConnectedComponents algorithm for nebula graph
     */

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/lib/TriangleCountAlgo.scala

@@ -17,8 +17,6 @@ import org.apache.spark.sql.types.{IntegerType, LongType, StructField, StructTyp
 object TriangleCountAlgo {
   private val LOGGER = Logger.getLogger(this.getClass)
 
-  val ALGORITHM: String = "TriangleCount"
-
   /**
     * run the TriangleCount algorithm for nebula graph
     *