Update duckdb index files

idioms-dataset/dataset/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:69cdb3cefe6a2dc3fb054e1394f3ac34354ae4de14fe599074ceb05c15e69154
-size 4468736
+oid sha256:f80f99631a5355dfa815f02daaf5ee04ed7682b59d89ed06876acfc7a6cb9f04
+size 3420160

idioms-dataset/test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:371aa7d0a6e37731cb6bf1212cf62d85b2270842b7b703961dbad52534dc1775
-size 3420160