Run ESLint at the top level once (#1202)

This significantly speeds up `yarn lint` for me. It also ensures we’re
listing all source files in the project, including the `.eslintrc` files
and any other files that may be present.

packages/api/package.json

@@ -9,7 +9,6 @@
     "dist"
   ],
   "scripts": {
-    "lint": "eslint .",
     "build:app": "yarn workspace loot-core build:api",
     "build:node": "tsc --p tsconfig.dist.json",
     "build:migrations": "cp migrations/*.sql dist/migrations",