Delete old duckdb index files

airline-sentiment/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a9ce73e32aed110ae3e611dabfa16d71e86051e3e6fd4ee7ba7d66d37a6dd4f0
-size 2371584

corporate-messaging/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:93edfb70a012e6d71b4716a3ce044317317b44b852cea60dfb11a8f0222133db
-size 1585152

economic-news/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:6ef489e2523fb0e93bd09e6a14bbea5846e3c9fc70950ed7010bf41a40f13176
-size 19935232

political-media-audience/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a8143b44292a7b5f559dcca1b5e0f6da9793b7d2a9b2ef12df854a879dc4527d
-size 3158016

political-media-bias/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4e752f757a25953dfa8a15d1bf2fffa55b3dd6bc02654503b0614180246b1c47
-size 3158016

political-media-message/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:00f0ce41d8a11d2997a070d4881e96a190b1efb8c4663398514ad1244317de30
-size 3158016

sentiment_nuclear_power/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:350788348d6d31db9efd9b99f82cb903ffa5458c03796f067cef2430dae73a4f
-size 1060864

text_emotion/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a9624ca055a712e26500d33a31af3cd3f2b9e43c272814b4ec91053800fba40c
-size 7090176

tweet_global_warming/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:086dfedf8c13d626300a67f455ef21221d902700a8b4d4c09ec9e3a3327bb9eb
-size 1847296