Removal of deprecated APIs

- OchSignal constructor
- unfiltered connect point methods in single point to multi point intents
- useBackup() method from disjoint paths
- ChannelAdapter class
- getLastUpdatedInstant() method from cluster store
- switchWorkingPath() method from protection config behaviour
- getVersion() method from partition
- getFlowRulesById() method from flow rule service

Change-Id: I5c6c2f31725f7e7e44ac2abb18ce3fb96b09d93e
diff --git a/core/api/src/main/java/org/onosproject/cluster/DefaultPartition.java b/core/api/src/main/java/org/onosproject/cluster/DefaultPartition.java
index f0a73b6..491f9a9 100644
--- a/core/api/src/main/java/org/onosproject/cluster/DefaultPartition.java
+++ b/core/api/src/main/java/org/onosproject/cluster/DefaultPartition.java
@@ -15,13 +15,12 @@
  */
 package org.onosproject.cluster;
 
-import java.util.Collection;
-import java.util.Objects;
-
 import com.google.common.base.MoreObjects;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Sets;
-import org.onosproject.core.Version;
+
+import java.util.Collection;
+import java.util.Objects;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
@@ -68,11 +67,6 @@
     }
 
     @Override
-    public Version getVersion() {
-        return null;
-    }
-
-    @Override
     public Collection<NodeId> getMembers() {
         return members;
     }