Delete old duckdb index files

default/ParaphraseRC_test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:5ecf8ebef5a7ca76c4beb04cec9372ef46d1b6d3e035491558faa1d3edefe308
-size 70004736

default/ParaphraseRC_train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:81e317a2c7028914369d239b53530a17d7bd22eeac364ce1cb693b08170edb0c
-size 303312896

default/ParaphraseRC_validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:0e16658d517938761604ac1f60dc128c9b4ca9bd83ded8faf31a6c1d01e2fc7a
-size 64761856

default/SelfRC_test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:dce785cf0d7835f7e022c0053536ddcaf5f8d727e357bbc519c101fbc3356404
-size 41955328

default/SelfRC_train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:95511e59237a5839ddce7337de43888eaa273a319b50aeca3b31f750825a62fa
-size 198193152

default/SelfRC_validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:7c2ffe1f07f3e5463850ce1003370a7a7f527cc11f78778fa6af3c406d2a5b66
-size 42741760