Delete old duckdb index files

es/test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:e7cb11c8ca4cc552edcf0068e8c7677d50ae826681808fa2f6925ccb986f8077
-size 1060864

ja/test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:56c85af58fec8e24b11db0aba587ef2b32998767879df97bd14d3c8a1dadba75
-size 1060864

ru/test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:2277ff7d8ff64ce9bd2e23cee3dc12caddffb720b9338533b78f560e3d7d35a6
-size 1060864