Delete old duckdb index files

enrichment_only/test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:96df5481f4c749ae1970ab2cbb498af44268e5efe8b6cae06f31658281d20c90
-size 1585152

enrichment_only/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:f4bc77931ab9f6386c98ca6d23e6663138dfcbb0e49d5eb89d8aa6655827a386
-size 8400896

enrichment_only/validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:ee535f8bc3821e7e7343787f0d169b6d3e08e5716732d969a25f2e78e901586d
-size 2109440

raw_and_enrichment_combined/test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:884af1506918890045c9b59a665e75884cb4dc2d96430ea6f207cddccfc11d71
-size 83374080

raw_and_enrichment_combined/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:7b8599d6f9c27ba9b8b5cb0397d801d63124b82f40c6bb12005a3bcc2329c047
-size 1351626752

raw_and_enrichment_combined/validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:458d7f47c9de57eba8fa3478ceba88f260507086db0518f35fb171ff0a71670f
-size 178794496