refactor: remove unused db

.gitignore

@@ -40,9 +40,6 @@ dist/
 ontime-db
 ontime-external/
 
-# working database
-apps/server/src/preloaded-db/db.json
-
 # versioning file
 **/ONTIME_VERSION.js
 

apps/electron/package.json

@@ -112,13 +112,6 @@
           "!*{.spec.js,*.test.js,*.spec.ts,.test.ts}"
         ]
       },
-      {
-        "from": "../server/src/preloaded-db/",
-        "to": "extraResources/preloaded-db/",
-        "filter": [
-          "**/*"
-        ]
-      },
       {
         "from": "../server/src/external/",
         "to": "extraResources/external/",