fix: deactivate netlify-plugin-search-index (#452)

Author: ehmicky

site/plugins.json

@@ -170,7 +170,8 @@
     "name": "Search index",
     "package": "netlify-plugin-search-index",
     "repo": "https://github.com/sw-yx/netlify-plugin-search-index",
-    "version": "0.1.5"
+    "version": "0.1.5",
+    "status": "DEACTIVATED"
   },
   {
     "author": "sw-yx",