diff --git a/test_runner/regress/data/extension_test/5670669815/v14/ext_index.json b/test_runner/regress/data/extension_test/5670669815/v14/ext_index.json
deleted file mode 100644
index af49dfa0c0..0000000000
--- a/test_runner/regress/data/extension_test/5670669815/v14/ext_index.json
+++ /dev/null
@@ -1,24 +0,0 @@
-{
-    "public_extensions": [
-        "anon",
-        "pg_buffercache"
-    ],
-    "library_index": {
-        "anon": "anon",
-        "pg_buffercache": "pg_buffercache"
-    },
-    "extension_data": {
-        "pg_buffercache": {
-            "control_data": {
-                "pg_buffercache.control": "# pg_buffercache extension \ncomment = 'examine the shared buffer cache' \ndefault_version = '1.3' \nmodule_pathname = '$libdir/pg_buffercache' \nrelocatable = true \ntrusted=true"
-            },
-            "archive_path": "5670669815/v14/extensions/pg_buffercache.tar.zst"
-        },
-        "anon": {
-            "control_data": {
-                "anon.control": "# PostgreSQL Anonymizer (anon) extension \ncomment = 'Data anonymization tools' \ndefault_version = '1.1.0' \ndirectory='extension/anon' \nrelocatable = false \nrequires = 'pgcrypto' \nsuperuser = false \nmodule_pathname = '$libdir/anon' \ntrusted = true \n"
-            },
-            "archive_path": "5670669815/v14/extensions/anon.tar.zst"
-        }
-    }
-}
\ No newline at end of file
diff --git a/test_runner/regress/data/extension_test/5670669815/v14/extensions/anon.tar.zst b/test_runner/regress/data/extension_test/5670669815/v14/extensions/anon.tar.zst
deleted file mode 100644
index 5c17630109..0000000000
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diff --git a/test_runner/regress/data/extension_test/5670669815/v14/extensions/pg_buffercache.tar.zst b/test_runner/regress/data/extension_test/5670669815/v14/extensions/pg_buffercache.tar.zst
deleted file mode 100644
index 69648a2f1a..0000000000
Binary files a/test_runner/regress/data/extension_test/5670669815/v14/extensions/pg_buffercache.tar.zst and /dev/null differ
diff --git a/test_runner/regress/data/extension_test/5670669815/v15/ext_index.json b/test_runner/regress/data/extension_test/5670669815/v15/ext_index.json
deleted file mode 100644
index fd0d1edc3c..0000000000
--- a/test_runner/regress/data/extension_test/5670669815/v15/ext_index.json
+++ /dev/null
@@ -1,17 +0,0 @@
-{
-    "public_extensions": [
-        "anon"
-    ],
-    "library_index": {
-        "anon": "anon"
-    },
-    "extension_data": {
-        "anon": {
-            "control_data": {
-                "anon.control": "# PostgreSQL Anonymizer (anon) extension \ncomment = 'Data anonymization tools' \ndefault_version = '1.1.0' \ndirectory='extension/anon' \nrelocatable = false \nrequires = 'pgcrypto' \nsuperuser = false \nmodule_pathname = '$libdir/anon' \ntrusted = true \n"
-            },
-            "archive_path": "5670669815/v15/extensions/anon.tar.zst"
-        }
-    }
-}
-
diff --git a/test_runner/regress/data/extension_test/5670669815/v15/extensions/anon.tar.zst b/test_runner/regress/data/extension_test/5670669815/v15/extensions/anon.tar.zst
deleted file mode 100644
index ea7034578f..0000000000
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