Delete old duckdb index files

argument_quality_ranking/test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:1272f844644a6c6db98fd4b692c694ac55334747389a8646497fd78833ec6291
-size 2109440

argument_quality_ranking/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a42c6bd0333c753505b8ac1a97cb8f4f3d0ae964cf0a444e4ad88c8ddec0232d
-size 4730880

argument_quality_ranking/validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:07253ca5e3989cdcc62f56dada5a248db22b6781f4e9494495a428b9e51d6f12
-size 1585152

argument_topic/test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4980bb7cddb03740243cc7950de126780928aef12117f3e6d246cf05f4f877ee
-size 1585152

argument_topic/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:d21c7924db0fc67461f4cdec8cea4e6f6d844f04da3da46ad0cff8c51755d417
-size 1585152

argument_topic/validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:209c1e52984d59f1d70e49ac9106318ce3c98fe053c5c5e038e3c9fbe757513b
-size 1060864