Remove unused functions from FNDS, SNDF, KNDF

core/java/src/net/i2p/data/DatabaseEntry.java

@@ -153,16 +153,6 @@ public abstract class DatabaseEntry extends DataStructureImpl {
                type == KEY_TYPE_META_LS2;
     }
 
-    /**
-     * Convenience method, is the type any variant of router info?
-     *
-     * @return true for any type of RouterInfo, false for LeaseSet, false for others
-     * @since x.x.x
-     */
-    public boolean isRouterInfo() {
-        return (getType() == KEY_TYPE_ROUTERINFO);
-    }
-
     /**
      * Returns the raw payload data, excluding the signature, to be signed by sign().
      *