Delete old duckdb index files

sub1/partial-test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:595c9cdd3ed084045bf9395598e31a8a8fd0399ca221f76ecd0d5ef354114251
-size 5004603392

sub1/partial-train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:afdc336be354e698674b48f8186d9e82263081a9380b609db89deff70c719851
-size 5737295872

sub1/partial-validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:641c42156420a4139b83f822db55d4ec4afa9b695e5f0a1a0473d885757b6e85
-size 866660352

sub1/test/partial-index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:3de7798119a433118b9b3dd63e077f08f1201d367e25d248ec52ffa07b1ab508
-size 5004603392

sub1/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:b6b54c6855e9b8b75de65a10f89c0b814c515edbad929114ea6c855faf11bd0e
-size 5737295872

sub1/validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:2947d32df713f84ae7049a61b04e8d3fd6da7d00448b6e586ae189707c1b699b
-size 866660352

sub2/partial-test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:121d0fe8330f691fdb6b0e0cd1c98d26529bd7b239165adea10c7d18936c55b0
-size 5186269184

sub2/partial-train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:b99b85c048448de15a70a20c1d6af7d789bff8da001c8bdc37c15599471b5965
-size 5737295872

sub2/partial-validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:8256f4920cb3c98507a3d144db0860f7f4bbab9fdef52bf49546282011c48c96
-size 866660352