Killed dead code.

Author: dustinhiatt-wf

btree/palm/tree.go

@@ -28,10 +28,6 @@ import (
 
 type operation int
 
-type disposable interface {
-	dispose(*ptree)
-}
-
 const (
 	get operation = iota
 	add
@@ -400,11 +396,6 @@ func (ptree *ptree) cleanMap(op map[*node][]*keyBundle) {
 	}
 }
 
-func (ptree *ptree) cleanMaps(adds, deletes map[*node][]*keyBundle) {
-	ptree.cleanMap(adds)
-	ptree.cleanMap(deletes)
-}
-
 func (ptree *ptree) recursiveMutate(adds, deletes map[*node][]*keyBundle, setRoot, inParallel bool) {
 	if len(adds) == 0 && len(deletes) == 0 {
 		return