diff --git a/css/selectors/blank.json b/css/selectors/blank.json
deleted file mode 100644
index b10c373c5120ee..00000000000000
--- a/css/selectors/blank.json
+++ /dev/null
@@ -1,44 +0,0 @@
-{
-  "css": {
-    "selectors": {
-      "blank": {
-        "__compat": {
-          "description": "<code>:blank</code>",
-          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:blank",
-          "spec_url": "https://drafts.csswg.org/selectors/#blank-pseudo",
-          "support": {
-            "chrome": {
-              "version_added": false,
-              "impl_url": "https://crbug.com/41151551"
-            },
-            "chrome_android": "mirror",
-            "edge": "mirror",
-            "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1197736"
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": false
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": false
-            },
-            "safari_ios": "mirror",
-            "samsunginternet_android": "mirror",
-            "webview_android": "mirror",
-            "webview_ios": "mirror"
-          },
-          "status": {
-            "experimental": true,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      }
-    }
-  }
-}
diff --git a/css/selectors/column.json b/css/selectors/column.json
deleted file mode 100644
index 5af257aa892d37..00000000000000
--- a/css/selectors/column.json
+++ /dev/null
@@ -1,43 +0,0 @@
-{
-  "css": {
-    "selectors": {
-      "column": {
-        "__compat": {
-          "description": "Column combinator (<code>A || B</code>)",
-          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Column_combinator",
-          "spec_url": "https://drafts.csswg.org/selectors/#the-column-combinator",
-          "support": {
-            "chrome": {
-              "version_added": false
-            },
-            "chrome_android": "mirror",
-            "edge": "mirror",
-            "firefox": {
-              "version_added": false,
-              "impl_url": "https://bugzil.la/1605558"
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": false
-            },
-            "oculus": "mirror",
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": false
-            },
-            "safari_ios": "mirror",
-            "samsunginternet_android": "mirror",
-            "webview_android": "mirror",
-            "webview_ios": "mirror"
-          },
-          "status": {
-            "experimental": true,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      }
-    }
-  }
-}