remove npmrc from landing

.npmrc

@@ -1,12 +0,0 @@
-; make all engine requirements (e.g. node version) strictly kept
-engine-strict=true
-dedupe-peer-dependents=true
-; necessary for metro + mobile
-strict-peer-dependencies=false
-node-linker=hoisted
-auto-install-peers=true
-max-old-space-size=4096
-enable-pre-post-scripts=true
-package-manager-strict=false
-
-; For CI/deployment, set //npm.pkg.github.com/:_authToken=${NPM_TOKEN} as env var