Remove unbalanced repository split

repo_split/test-00000-of-00001.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:13d4865c75c2613b0460c382ccfe539ffbe697a0a735ae3d76a8c727bffd1473
-size 3723862

repo_split/train-00000-of-00001.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:69069ea10c076588009c6f12ff8caafd04924dd2d479eadc682b9378008ab304
-size 32457786

repo_split/validation-00000-of-00001.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a8a764efaa0c8bea5492a392ebe0e8444f5675c1fcdb5b4315109559282d4741
-size 8519930