Delete old duckdb index files

pairs/ref/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:53391f3cf4c0613dde39d78c20ecc25ed6c2061d393cc87caa68fd962db843e9
-size 1585152

pairs/sup/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:58d3be38852d08dbe85b43592d4872f7c1bd51bfed536437e56c2002c07b3eaf
-size 1323008

pairs/test/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:7108b4031d68915f2e5401e16ea3e6176c62f070b5ca16095c470f82cdd0bd88
-size 1585152

pairs/train/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:6f2df62d7b757b040435cc3747735bfb38f8b5aee087501c74c42ee145fb1214
-size 1323008

pairs/valid/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:22434bf5ac02a7119821bf85e2bfff1d79b592283a2b08ffaee254e54a13bb7a
-size 1323008

source/ent_ids/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:75657497a9487e26b76904360cb71fae26dadbe9e27b32c1007a7b55acdd7410
-size 7614464

source/rel_triples_id/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:3890f4c1fe16be472a1513a083c8e570b5111cead56e457bba890c8abae7ec3d
-size 5779456

target/ent_ids/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:91f2d0de9d727d03b543761eb2b633155d14a2f1546c988ce0675d8a54652750
-size 3944448

target/rel_triples_id/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:9f9ee2114743a7e8f291fe32e781009eb15383c9931013073482e006d6203e88
-size 5779456