Delete old duckdb index files

default/train__gale_ar_en/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:16c210dd774ed9e111d399334f6437b9802769eadab316562fd0323474dd73ea
-size 65286144

default/train__gale_zh_en/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:96bb8d77417475772e7badc1f3a9814b0d8780a7f21fd3c082ee4290a5a78e52
-size 43003904

default/train__gv_ar_en/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4cf3f92719fd04fa3e0bd05322c2a7e2f9fb1b7040092db3af5f2510c18c3137
-size 127938560

default/train__gv_ru_en/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:12884c94194325016e914309434ee9bb19e1a13b4db7ceb75513a4219c01b2de
-size 488648704

default/train__nc_ar_en/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:7ec3b9f6f6e0bd8c888bf210961311667b304f8a80d1559ffd3dbb1ba98008ef
-size 66072576

default/train__nc_ru_en/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:740b4dca8d7dbf95fa3922db8db6461a3645756dc7a6edb390ae13fe27893df2
-size 106967040

default/train__nc_zh_en/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:f677dc0b2b759ff82c61e5bd7f976fe61b33b0ac2e6382209ec0d5b71f008f85
-size 57946112