Drop the family-level parquet dirs superseded by one subset per task

all/test.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:c5fc487ab0cb17c5668e6f5e6f7b4e3cc585c4a018d049daebd623e76a83fecc
-size 766561

all/test_full.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:39316c24d4b3e6dab67091dcb8df9c807b008b865eba91cb9398646a395215fa
-size 8688182

all/train.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:1906aa6c1858164d7fa7b1e7653aee748b934665086d2ead42f297d74314de06
-size 833938786

name_conversion/test.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4335185eeef9d1a207bb1e8383dd615e2b8e4a827c8a49c88c9414aa97a38c46
-size 231922

name_conversion/test_full.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:be511e14811faca74db6b360b018b1ef7f63b247268ee24c654cb7e355aad282
-size 2702177

name_conversion/train.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:223a0912791734971c6d51fb99f5f3c3d820750b52aaba29cf388d15cb01cfa0
-size 264251553

property_prediction/test.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:128e3f67e85abeb93243edda89c7e96b8f47fd33a5340a9ec13be6f05c662f4e
-size 174378

property_prediction/test_full.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:b70d8c58be4641aee5d85237306d889ba3e96b964470eb01004e2850f6ed3b6d
-size 892755

property_prediction/train.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:b4d624cf80c1e638a26bdb518a5f4fa43047bd614fd213a7f7904d7a1a1d8922
-size 5516411