diff --git a/css/properties/-moz-context-properties.json b/css/properties/-moz-context-properties.json
deleted file mode 100644
index 1fd5ba7cb04da1..00000000000000
--- a/css/properties/-moz-context-properties.json
+++ /dev/null
@@ -1,70 +0,0 @@
-{
-  "css": {
-    "properties": {
-      "-moz-context-properties": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/-moz-context-properties",
-          "support": {
-            "chrome": {
-              "version_added": false
-            },
-            "chrome_android": {
-              "version_added": false
-            },
-            "edge": {
-              "version_added": false
-            },
-            "firefox": {
-              "version_added": "55",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "svg.context-properties.content.enabled",
-                  "value_to_set": "true"
-                }
-              ],
-              "notes": "With the preference set to <code>false</code>, the property still works with SVGs via <code>chrome://</code> or <code>resource://</code> URLs"
-            },
-            "firefox_android": {
-              "version_added": "55",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "svg.context-properties.content.enabled",
-                  "value_to_set": "true"
-                }
-              ],
-              "notes": "With the preference set to <code>false</code>, the property still works with SVGs via <code>chrome://</code> or <code>resource://</code> URLs"
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
-            "safari": {
-              "version_added": false
-            },
-            "safari_ios": {
-              "version_added": false
-            },
-            "samsunginternet_android": {
-              "version_added": false
-            },
-            "webview_android": {
-              "version_added": false
-            }
-          },
-          "status": {
-            "experimental": true,
-            "standard_track": false,
-            "deprecated": false
-          }
-        }
-      }
-    }
-  }
-}