diff --git a/policy/policy_handler/legacy/ssc_metadata.go b/policy/policy_handler/legacy/ssc_metadata.go
index 0abc0d0..08b86dd 100644
--- a/policy/policy_handler/legacy/ssc_metadata.go
+++ b/policy/policy_handler/legacy/ssc_metadata.go
@@ -104,70 +104,3 @@ func unmarshalInTotoStatement(content []byte) (*intotoStatement, error) {
 	}
 	return &stmt, nil
 }
-
-type provenanceDocument struct {
-	Invocation struct {
-		ConfigSource struct {
-			Uri    string `json:"uri"`
-			Digest struct {
-				SHA1 string `json:"sha1"`
-			}
-			EntryPoint string `json:"entryPoint"`
-		} `json:"configSource"`
-		Parameters struct {
-			Args map[string]string `json:"args"`
-		} `json:"parameters"`
-	} `json:"invocation"`
-	BuildConfig struct {
-		DigestMapping map[string]string `json:"digestMapping"`
-		LLBDefinition []llbDefinition   `json:"llbDefinition"`
-	} `json:"buildConfig"`
-	Metadata struct {
-		Buildkit struct {
-			VCS struct {
-				Revision string `json:"revision"`
-				Source   string `json:"source"`
-			} `json:"vcs"`
-			Source struct {
-				Locations map[string]struct {
-					Locations []struct {
-						SourceIndex int `json:"sourceIndex"`
-						Ranges      []struct {
-							Start struct {
-								Line int `json:"line"`
-							} `json:"start"`
-							End struct {
-								Line int `json:"line"`
-							} `json:"end"`
-						} `json:"ranges"`
-					} `json:"locations"`
-				} `json:"locations"`
-				Infos []struct {
-					Path string `json:"filename"`
-					Data string `json:"data"`
-				} `json:"infos"`
-			} `json:"source"`
-			Layers map[string][][]struct {
-				MediaType string `json:"mediaType"`
-				Digest    string `json:"digest"`
-				Size      int    `json:"size"`
-			} `json:"layers"`
-		} `json:"https://mobyproject.org/buildkit@v1#metadata"`
-	} `json:"metadata"`
-}
-
-type llbDefinition struct {
-	ID string `json:"id"`
-	OP struct {
-		OP struct {
-			Source struct {
-				Identifier string `json:"identifier"`
-			} `json:"source"`
-		} `json:"Op"`
-		Platform struct {
-			OS           string `json:"OS"`
-			Architecture string `json:"Architecture"`
-			Variant      string `json:"Variant"`
-		}
-	} `json:"op"`
-}