[SDFAB-188] Remove buffer drainer from UpfProgrammable

Change-Id: Id10d8b41d203b4af99867d169255a63fe99b25a0
(cherry picked from commit ac94678fb6204b76f44feef3e6098b18c84359bd)
diff --git a/pipelines/fabric/impl/src/main/java/org/onosproject/pipelines/fabric/impl/behaviour/upf/FabricUpfStore.java b/pipelines/fabric/impl/src/main/java/org/onosproject/pipelines/fabric/impl/behaviour/upf/FabricUpfStore.java
index 786ef3c..9b5d853 100644
--- a/pipelines/fabric/impl/src/main/java/org/onosproject/pipelines/fabric/impl/behaviour/upf/FabricUpfStore.java
+++ b/pipelines/fabric/impl/src/main/java/org/onosproject/pipelines/fabric/impl/behaviour/upf/FabricUpfStore.java
@@ -16,12 +16,9 @@
 
 package org.onosproject.pipelines.fabric.impl.behaviour.upf;
 
-import org.onlab.packet.Ip4Address;
 import org.onlab.util.ImmutableByteSequence;
-import org.onosproject.net.behaviour.upf.PacketDetectionRule;
 
 import java.util.Map;
-import java.util.Set;
 
 /**
  * Stores state required for translation of UPF entities to pipeline-specific ones.
@@ -80,62 +77,6 @@
      *
      * @param queueId Tofino queue Id
      * @return the corresponding scheduling priroity
-    */
+     */
     String schedulingPriorityOf(int queueId);
-
-    /**
-     * Stores the mapping between FAR ID and UE address as defined by the given PDR.
-     *
-     * @param pdr PDR
-     */
-    void learnFarIdToUeAddrs(PacketDetectionRule pdr);
-
-    /**
-     * Returns true if the given FAR IDs is known to be a buffering one.
-     *
-     * @param farId FAR ID
-     * @return boolean
-     */
-    boolean isFarIdBuffering(UpfRuleIdentifier farId);
-
-    /**
-     * Learns the given FAR ID as being a buffering one.
-     *
-     * @param farId FAR ID
-     */
-    void learBufferingFarId(UpfRuleIdentifier farId);
-
-    /**
-     * Forgets the given FAR ID as being a buffering one.
-     *
-     * @param farId FAR ID
-     */
-    void forgetBufferingFarId(UpfRuleIdentifier farId);
-
-    /**
-     * Returns the set of UE addresses associated with the given FAR ID.
-     *
-     * @param farId FAR ID
-     * @return Set of Ip4Address
-     */
-    Set<Ip4Address> ueAddrsOfFarId(UpfRuleIdentifier farId);
-
-    /**
-     * Removes the given UE address from the FAR ID to UE address map.
-     * @param ueAddr UE address
-     */
-    void forgetUeAddr(Ip4Address ueAddr);
-
-    /**
-     * Returns the set of known buffering FAR IDs.
-     * @return set
-     */
-    Set<UpfRuleIdentifier> getBufferFarIds();
-
-    /**
-     * Returns the FAR ID to UE addresses map.
-     *
-     * @return map
-     */
-    Map<UpfRuleIdentifier, Set<Ip4Address>> getFarIdToUeAddrs();
 }