Delete old duckdb index files

v1/partial-validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:8de36787991a82d64feb5792ebea2dbd4ab616dfc543e19d18773d80878066ea
-size 1909207040

v1/validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4153bcd2081872931b803438cd01f86e26520d8d80399c189176de7865b0b404
-size 1896624128

v2/partial-validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:3b399603311d6bb4b23bf3662cb7a69c29a6445930850a0702545c04739b9d6a
-size 1882206208

v2/validation/index.duckdb

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:9ecaf64c5fad05c5f1fad9644aa9dde004c98c8ccd8d79b114237a6779d6ff9a
-size 1880633344