Delete old duckdb index files

Preprocess/Preprocess_train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a723aa2a588ed8246027a76ab58c469509d42ccb045720114a7767422bdb09a0
-size 81276928

Preprocess/Preprocess_validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:24a67e7388dcb89b2d301e2dc285610dcadaa7acceb9a4754a0f41b4b676a908
-size 20983808

Preprocess/test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:ba4f746e7fe086874e3c4797547cc99af2071459994129c643c44ab5b16bc2f9
-size 1323008

Preprocess/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:59ab20f643cb21174159cac0fffe44b9e1d4d0f75fd1a3a3c383e2dddd9dc534
-size 81276928

Preprocess/validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:07dd3513911cf938169c842f6d181a4893288b46258f77580d1a687825f7dbbf
-size 20983808

default/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:59b3fdb77cf2892e1d3a064283bf8677018d6e4d03b5ba5aa77b1f086c422159
-size 82063360

default/validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:7eaf6dd36db9bc623f719e643e1f96c784b66b005abb6176ac0febcc4af716f8
-size 22032384