Delete old duckdb index files

ihm/partial-test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:0e4e3b7ed0fe6b2abad392029439bed8ac684fe0df6dbab2e7e21590fe3d160f
-size 843853824

ihm/partial-train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:0dcbd1491e3e2870c16e026845a44531ba896b83633a4f3a83247b4dece5a429
-size 1970810880

ihm/partial-validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:8af3921ad6d9c1e0fe068a5f787c2e9636c8ba92bc97b2add1c3cd6354b764ea
-size 1030762496

sdm/partial-test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:f308527627c422ac49b02512f0cf927be387cba325b38817ad181e914d12a8bd
-size 832843776

sdm/partial-train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:67ac500d158533ec9a9522a7e228827b6857546ae6ea5fd8ac1b99aa631e4a79
-size 1955868672

sdm/partial-validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:0d542527ce05011023d8c7bf8032473d0cd3a4bd134f3dec98909f8d896f1131
-size 939798528