Remove unused FileHashes.root

Signed-off-by: Tim Waugh <[email protected]>

backvendor/filehash.go

@@ -49,9 +49,6 @@ type FileHashes struct {
 	// h is the Hasher used to create each FileHash
 	h Hasher
 
-	// root is the top level directory
-	root string
-
 	// hashes maps a relative filename to its FileHash
 	hashes map[string]FileHash
 }
@@ -62,7 +59,6 @@ type FileHashes struct {
 func NewFileHashes(h Hasher, root string, excludes map[string]struct{}) (*FileHashes, error) {
 	hashes := &FileHashes{
 		h:      h,
-		root:   root,
 		hashes: make(map[string]FileHash),
 	}
 	root = path.Clean(root)

backvendor/filehash_test.go

@@ -31,9 +31,6 @@ func TestNewFileHashes(t *testing.T) {
 	if hashes == nil {
 		t.Fatal("NewFileHashes returned nil map")
 	}
-	if hashes.root != "testdata/gosource" {
-		t.Fatalf("Incorrect hashes.root (%s)", hashes.root)
-	}
 	emptyhash := FileHash("e69de29bb2d1d6434b8b29ae775ad8c2e48c5391")
 	expected := map[string]FileHash{
 		"ignored.go":                                 emptyhash,
@@ -104,7 +101,6 @@ func TestIsSubsetOf(t *testing.T) {
 
 	other := &FileHashes{
 		h:      hasher,
-		root:   hashes.root,
 		hashes: make(map[string]FileHash),
 	}
 	for k, v := range hashes.hashes {

backvendor/git.go

@@ -165,7 +165,6 @@ func (g *gitWorkingTree) FileHashesFromRef(ref string) (*FileHashes, error) {
 	}
 	return &FileHashes{
 		h:      hasher,
-		root:   g.anyWorkingTree.Source.Path,
 		hashes: fh,
 	}, nil
 }