Delete old duckdb index files

default/test/index.duckdb

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-oid sha256:168769c864ebbf83405c6d0840cc94a02808e8b501674faef663e870d20b4088
-size 1632907264

default/train/index.duckdb

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-version https://git-lfs.github.com/spec/v1
-oid sha256:0ba48a29b3a61eca3136d98ff4af3200353b7d39578196e3f406ae76dbaa5d5b
-size 6413889536

embedding_all-MiniLM-L12-v2/test/index.duckdb

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-version https://git-lfs.github.com/spec/v1
-oid sha256:058329789430f65f974206b51eb702d5741b440f06ebf50cb0dfd862e8e64563
-size 471609344

embedding_all-MiniLM-L12-v2/train/index.duckdb

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-version https://git-lfs.github.com/spec/v1
-oid sha256:b6370f005703941fa49c00541065baeb945bfd297453a512aa2c4ca2a590567a
-size 1822961664

embedding_all-mpnet-base-v2/test/index.duckdb

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-version https://git-lfs.github.com/spec/v1
-oid sha256:cbd034198132d24d980eaff9324537e4651b820a942336d8691860cb37bac2be
-size 943206400

embedding_all-mpnet-base-v2/train/index.duckdb

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-version https://git-lfs.github.com/spec/v1
-oid sha256:822ce21b90f9a3895e0b80259d1b348efe3d1acc5dfe08337e133acc61e3666a
-size 3645648896

embedding_multi-qa-mpnet-base-dot-v1/test/index.duckdb

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-version https://git-lfs.github.com/spec/v1
-oid sha256:2e8433dcec2a7e53196a9556bfaed8a5dfdb57ac5d64f73b1e0b3843b3ed2e59
-size 943206400

embedding_multi-qa-mpnet-base-dot-v1/train/index.duckdb

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-version https://git-lfs.github.com/spec/v1
-oid sha256:e536ce539fb3b0e37a701f8a82aaf1fd4653b05f6590266d653e1b41cbdc5645
-size 3645648896

labels/train/index.duckdb

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-version https://git-lfs.github.com/spec/v1
-oid sha256:3046c22c167a0130e067496d975dae571390e56f584112507d19eafdf393dd5c
-size 1323008