diff --git a/internal/builder/builder.go b/internal/builder/builder.go
index 89ffc9845..2602bd27f 100644
--- a/internal/builder/builder.go
+++ b/internal/builder/builder.go
@@ -47,8 +47,6 @@ const (
 	workspaceDir       = "/workspace"
 	layersDir          = "/layers"
 
-	emptyTarDiffID = "sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
-
 	metadataLabel = "io.buildpacks.builder.metadata"
 	stackLabel    = "io.buildpacks.stack.id"
 
diff --git a/internal/commands/builder_create.go b/internal/commands/builder_create.go
index 4eb497724..16178cc71 100644
--- a/internal/commands/builder_create.go
+++ b/internal/commands/builder_create.go
@@ -2,9 +2,10 @@ package commands
 
 import (
 	"fmt"
+	"path/filepath"
+
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
-	"path/filepath"
 
 	"github.com/buildpacks/pack/builder"
 	"github.com/buildpacks/pack/internal/config"
diff --git a/internal/commands/buildpack_package.go b/internal/commands/buildpack_package.go
index 0117e5b36..268d4157b 100644
--- a/internal/commands/buildpack_package.go
+++ b/internal/commands/buildpack_package.go
@@ -2,9 +2,10 @@ package commands
 
 import (
 	"context"
+	"path/filepath"
+
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
-	"path/filepath"
 
 	pubbldpkg "github.com/buildpacks/pack/buildpackage"
 	"github.com/buildpacks/pack/internal/config"
diff --git a/pkg/buildpack/builder.go b/pkg/buildpack/builder.go
index c41af1fb5..7236cede0 100644
--- a/pkg/buildpack/builder.go
+++ b/pkg/buildpack/builder.go
@@ -3,6 +3,9 @@ package buildpack
 import (
 	"archive/tar"
 	"compress/gzip"
+	"io"
+	"os"
+
 	"github.com/buildpacks/imgutil"
 	"github.com/buildpacks/imgutil/layer"
 	v1 "github.com/google/go-containerregistry/pkg/v1"
@@ -11,8 +14,6 @@ import (
 	"github.com/google/go-containerregistry/pkg/v1/mutate"
 	"github.com/google/go-containerregistry/pkg/v1/tarball"
 	"github.com/pkg/errors"
-	"io"
-	"os"
 
 	"github.com/buildpacks/pack/pkg/logging"
 
@@ -35,12 +36,6 @@ type layoutImage struct {
 	v1.Image
 }
 
-type toAdd struct {
-	tarPath string
-	diffID  string
-	module  BuildModule
-}
-
 func (i *layoutImage) SetLabel(key string, val string) error {
 	configFile, err := i.ConfigFile()
 	if err != nil {
diff --git a/pkg/buildpack/buildpack_test.go b/pkg/buildpack/buildpack_test.go
index 77f1d2390..7b5756211 100644
--- a/pkg/buildpack/buildpack_test.go
+++ b/pkg/buildpack/buildpack_test.go
@@ -835,35 +835,3 @@ func assertBuildpacksToTar(t *testing.T, actual []buildpack.ModuleTar, expected
 		h.AssertTrue(t, found)
 	}
 }
-
-func assertWindowsBuildpacksToTar(t *testing.T, actual []buildpack.ModuleTar, expected []expectedBuildpack) {
-	t.Helper()
-	for _, expectedBP := range expected {
-		found := false
-		for _, moduleTar := range actual {
-			if expectedBP.id == moduleTar.Info().ID && expectedBP.version == moduleTar.Info().Version {
-				found = true
-				h.AssertOnTarEntry(t, moduleTar.Path(), fmt.Sprintf("Files/cnb/buildpacks/%s", expectedBP.id),
-					h.IsDirectory(),
-				)
-				h.AssertOnTarEntry(t, moduleTar.Path(), fmt.Sprintf("Files/cnb/buildpacks/%s/%s", expectedBP.id, expectedBP.version),
-					h.IsDirectory(),
-				)
-				h.AssertOnTarEntry(t, moduleTar.Path(), fmt.Sprintf("Files/cnb/buildpacks/%s/%s/bin", expectedBP.id, expectedBP.version),
-					h.IsDirectory(),
-				)
-				h.AssertOnTarEntry(t, moduleTar.Path(), fmt.Sprintf("Files/cnb/buildpacks/%s/%s/bin/build.bat", expectedBP.id, expectedBP.version),
-					h.HasFileMode(0700),
-				)
-				h.AssertOnTarEntry(t, moduleTar.Path(), fmt.Sprintf("Files/cnb/buildpacks/%s/%s/bin/detect.bat", expectedBP.id, expectedBP.version),
-					h.HasFileMode(0700),
-				)
-				h.AssertOnTarEntry(t, moduleTar.Path(), fmt.Sprintf("Files/cnb/buildpacks/%s/%s/buildpack.toml", expectedBP.id, expectedBP.version),
-					h.HasFileMode(0700),
-				)
-				break
-			}
-		}
-		h.AssertTrue(t, found)
-	}
-}