diff --git a/tests/php/Core/Manifest/fixtures/VersionProviderTest/composer.no-recipe.testlock b/tests/php/Core/Manifest/fixtures/VersionProviderTest/composer.no-recipe.testlock
deleted file mode 100644
index aad7303d9..000000000
--- a/tests/php/Core/Manifest/fixtures/VersionProviderTest/composer.no-recipe.testlock
+++ /dev/null
@@ -1,16 +0,0 @@
-{
-    "_readme": [
-        "This is a fixture file for unit tests"
-    ],
-    "content-hash": "abc123",
-    "packages": [
-        {
-            "name": "silverstripe/framework",
-            "version": "1.2.3"
-        },
-        {
-            "name": "silverstripe/cms",
-            "version": "4.5.6"
-        }
-    ]
-}
diff --git a/tests/php/Core/Manifest/fixtures/VersionProviderTest/composer.recipe-cms-core-and-cwpcore.testlock b/tests/php/Core/Manifest/fixtures/VersionProviderTest/composer.recipe-cms-core-and-cwpcore.testlock
deleted file mode 100644
index a3beb11f0..000000000
--- a/tests/php/Core/Manifest/fixtures/VersionProviderTest/composer.recipe-cms-core-and-cwpcore.testlock
+++ /dev/null
@@ -1,28 +0,0 @@
-{
-    "_readme": [
-        "This is a fixture file for unit tests"
-    ],
-    "content-hash": "abc888",
-    "packages": [
-        {
-            "name": "silverstripe/framework",
-            "version": "1.2.3"
-        },
-        {
-            "name": "silverstripe/cms",
-            "version": "4.5.6"
-        },
-        {
-            "name": "silverstripe/recipe-core",
-            "version": "7.7.7"
-        },
-        {
-            "name": "silverstripe/recipe-cms",
-            "version": "8.8.8"
-        },
-        {
-            "name": "cwp/cwp-core",
-            "version": "9.9.9"
-        }
-    ]
-}
diff --git a/tests/php/Core/Manifest/fixtures/VersionProviderTest/composer.recipe-core.testlock b/tests/php/Core/Manifest/fixtures/VersionProviderTest/composer.recipe-core.testlock
deleted file mode 100644
index 4cf00ce0c..000000000
--- a/tests/php/Core/Manifest/fixtures/VersionProviderTest/composer.recipe-core.testlock
+++ /dev/null
@@ -1,20 +0,0 @@
-{
-    "_readme": [
-        "This is a fixture file for unit tests"
-    ],
-    "content-hash": "abc777",
-    "packages": [
-        {
-            "name": "silverstripe/framework",
-            "version": "1.2.3"
-        },
-        {
-            "name": "silverstripe/cms",
-            "version": "4.5.6"
-        },
-        {
-            "name": "silverstripe/recipe-core",
-            "version": "7.7.7"
-        }
-    ]
-}