Delete old duckdb index files

default/challenge_test_backtranslation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:543c3306667e1aeed5c38d7426c5c4dd382c97335335578d81f2db16db6c0dbd
-size 1585152

default/challenge_test_bfp02/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:ce6abd68f85e42428bb0ba8961aabf93c7a86f62b3477d5e401b35705ce60fa2
-size 1323008

default/challenge_test_bfp05/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:315344fe39cb82b252cf6be71470a9e89a085236553a7b6f3ef03f77c2964286
-size 1323008

default/challenge_test_nopunc/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:aa45638be262f4a1486c1257c6c60d22df2ef8f33f659968593803c83b53c607
-size 1323008

default/challenge_test_scramble/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:96e6022bd30951b85b88f0c5e98323b89c1557ffb5ebe7a9a014fa83b991a926
-size 1585152

default/challenge_train_sample/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4608ef4afe3e7a699e93adaa9332792fb4fcc9a262e95b42ee69dd44cd124f6a
-size 1585152

default/challenge_validation_sample/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:3dfba92d3474f085ba6694100265174e447cddf89251ad94be82eba531b738e3
-size 1323008

default/test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:561d895b100e52cb8ce0c32b934ecf6684e1e985aa4de9d13bb4f33fca080dc3
-size 13381632

default/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:52a040bb6ac4b31a7d0fbfc3a7a3c236a6049f463ae18ff831c34f50f9b2a00a
-size 141570048

default/validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:09687e7567fa463ad53ba6ac57a42f2dcb6c4db251ed5fdab637c7d58d569b5e
-size 12595200