Delete old duckdb index files

eng_Latn-ben_Beng/train/index.duckdb

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-version https://git-lfs.github.com/spec/v1
-oid sha256:f70cc70e6e9d1c169ef50df658e45914315f418d9766cddbdb96e3e8121c7022
-size 657993728

eng_Latn-hin_Deva/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:8c872989633bbe277131ae8db50f4d3dd93fad10e22fde17b72415eeef8ba98d
-size 1334325248

eng_Latn-lao_Laoo/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:12ff7437c8ccd0a6ef7caef5d71e7bbb6b2f9b6ed29284082919aa1ec637be56
-size 35926016

eng_Latn-mya_Mymr/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:5237008226194bc8ac2744aaf88b886dd253a8db9b95750715e5ed65181bef7b
-size 52703232

eng_Latn-tgl_Latn/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a5dbe5458015698fbff1bd1010cb19ac3460e4a7f09fb37d0a4c42b959b6ee64
-size 1448620032

eng_Latn-tha_Thai/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:7a3cb5d96c9ae8d090f418e0d9aaea34b43486b55ac00d744ad80a9ee0ae8155
-size 356790272

eng_Latn-vie_Latn/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:c6d06cde8c67e336ab5e036c79d1621f17b266369714fb821c6da973cbd37455
-size 3435147264