Delete old duckdb index files

mega-acceptability-v2/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:7d9045058427412aa689096a43088862a4445b29278da0fc5be8c3902e62d37a
-size 16527360

mega-intensionality-v1-normalized/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:990b13136a7ad7e43adec48619b2e8079c184e0bcf8af1b59d719009551d74ce
-size 1323008

mega-negraising-v1-normalized/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:32fde69b1f71a4163c3e7a56d01efe27564a030ebd277af043f813132b930d85
-size 1585152

mega-orientation-v1.1/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:525aaa451394038b3ee175d8bd248e0f7b0f18fba31509d2ac78bb4fdc25796e
-size 3682304

mega-veridicality-v2/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4889e1ad7241f001a50be121d53d64fca9ea4137ef738b4365658d7293e29927
-size 4206592