Update duckdb index files

metaphors-dataset/dataset/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:8d903616f32def4210ba5160377e3140759cfcb773461450d4667adce88ddab3
+oid sha256:c18a4e052895837ace959a5021a70ea16cb1ee2260a9e69812e91fed1e868497
 size 1323008

metaphors-dataset/test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:c8e62d2248a861d96c9169cb70a821fefd707a8f017fa8c411c5ab72e59fbff7
-size 1323008