Delete old duckdb index files

BCS/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a8d35dc4b1608c89942b997e2a7a5ea5cb9dd552f9cd7d725d94198fd5f4a74f
-size 1847296

BCS_additional_test/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:3892d0676dfbd82e6233f0a4d1830d0d335a3af0b5c78f5925b3ac65b46d9528
-size 1585152

CZ/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:6f4be8acbaeee323d1f0c1c9c3ec5b5265526c06d4e626be760dc067215ec319
-size 1847296

EN/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:3d17de36c3e5a84aeb2cb1778762ccf3321cccfd049f0e18d4b0f72288e3d9e3
-size 1585152

EN_additional_test/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:ac484b855a5b471be29731cb2cf866e70d291add058060d93458aeb38c435189
-size 1585152

SK/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:943cb6b3a2fa95cf63bffb021ac610fc70828f66860d52abee47d65233c7ccc7
-size 1847296

SL/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:d7516a1858eed0fe5726228718efff10c9584f29edbc1be0ed4a9d8622b77a18
-size 1585152