Delete old duckdb index files

gaussian/partial-train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a45cee38d2f285645f84ee29c25366517d3bdcfcafb460a56446237305ab2bb1
-size 10277367808

gaussian/partial-validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:ca56dd5a7dbee7461f71ec70cb21037a6526e5fa323c0bae66d2912363c10844
-size 3056087040

random/partial-train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:1acaedf0ae0c3002caed71488e973cfda4b436028f24c4bca56cf9cc1877a4cd
-size 10826821632

random/partial-validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:85e34929216d5300bc84b215024bb70ac35a1ef75c22038111d0f107de55eddc
-size 3052154880

stepwise/partial-train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:141cb15710df4a5c4e37a90fcf101c4a9571d4005863bea7212bd02651261545
-size 10262425600

stepwise/partial-validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:c0773ac3d71279a559f80c3717c09b4d98fe5e2e0e47d27a45543b75c872968a
-size 3056087040