remove dependabot updates

.github/dependabot.yml

@@ -1,22 +0,0 @@
-# To get started with Dependabot version updates, you'll need to specify which
-# package ecosystems to update and where the package manifests are located.
-# Please see the documentation for all configuration options:
-# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
-
-version: 2
-updates:
-  - package-ecosystem: "npm"
-    directory: "/"
-    schedule:
-      interval: "monthly"
-
-  - package-ecosystem: "npm"
-    directory: "/client"
-    schedule:
-      interval: "monthly"
-
-  - package-ecosystem: "npm"
-    directory: "/server"
-    schedule:
-      interval: "monthly"
-