Delete old duckdb index files

default/test.clean/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:491ad704ee57701b358042011f0a08e749d29ce489b278acc10c7e345194d5a8
-size 348401664

default/test.other/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:acae7ba9fa67e02d4784e261a2b557693cb4b2f8009012f539b4f84d2426152d
-size 331100160

default/train.clean.100/partial-index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:f8a03e67d054f1977d5d29307ef9678530f5fb0cc3eb817978ce4e830ed5b271
-size 5062012928

default/train.clean.360/partial-index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:b4d332338e5762632e62ad1ec14b5aa824897164792abad598efff188398ba0c
-size 5255737344

default/train.other.500/partial-index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:cd97b38bcd118a3041b942d528e9c4ade6e7c4b6817113789a04e108cb310345
-size 5257310208

default/validation.clean/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:6d345e689b9585266a80a51a1af07fec8b6f1a69afdc2d712edc4edc637ec588
-size 339750912

default/validation.other/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:0dcd94bab83762c8085312ad13393c82bd9c890962f28caa5f409330a829a37d
-size 316420096