all: remove some unused code

Signed-off-by: Daniel Martí <mvdan@mvdan.cc>

Author: mvdan

plumbing/cache/queue.go

@@ -174,7 +174,6 @@ func (iter *EncodedObjectLookupIter) Close() {
 // no longer needed.
 type EncodedObjectSliceIter struct {
 	series []plumbing.EncodedObject
-	pos    int
 }
 
 // NewEncodedObjectSliceIter returns an object iterator for the given slice of
@@ -218,7 +217,6 @@ func (iter *EncodedObjectSliceIter) Close() {
 // longer needed.
 type MultiEncodedObjectIter struct {
 	iters []EncodedObjectIter
-	pos   int
 }
 
 // NewMultiEncodedObjectIter returns an object iterator for the given slice of

plumbing/storer/object.go

@@ -298,17 +298,6 @@ func (s *rpSession) updateReferences(req *packp.ReferenceUpdateRequest) {
 	}
 }
 
-func (s *rpSession) failAtomicUpdate() (*packp.ReportStatus, error) {
-	rs := s.reportStatus()
-	for _, cs := range rs.CommandStatuses {
-		if cs.Error() == nil {
-			cs.Status = "atomic updated"
-		}
-	}
-
-	return rs, s.firstErr
-}
-
 func (s *rpSession) writePackfile(r io.ReadCloser) error {
 	if r == nil {
 		return nil

plumbing/transport/server/server.go

@@ -798,5 +798,3 @@ func isNum(b byte) bool {
 func isHexAlpha(b byte) bool {
 	return b >= 'a' && b <= 'f' || b >= 'A' && b <= 'F'
 }
-
-type refCache map[plumbing.ReferenceName]*plumbing.Reference

storage/filesystem/internal/dotgit/dotgit.go

@@ -607,10 +607,6 @@ func (w *Worktree) getTreeFromCommitHash(commit plumbing.Hash) (*object.Tree, er
 	return c.Tree()
 }
 
-func (w *Worktree) initializeIndex() error {
-	return w.r.Storer.SetIndex(&index.Index{Version: 2})
-}
-
 var fillSystemInfo func(e *index.Entry, sys interface{})
 
 const gitmodulesFile = ".gitmodules"