build: remove redundant typings

Author: mattlewis92

package-lock.json

@@ -95,7 +95,6 @@
     "@stackblitz/sdk": "^1.4.0",
     "@types/chai": "^4.2.11",
     "@types/mocha": "^7.0.2",
-    "@types/moment-timezone": "^0.5.13",
     "@types/node": "^14.0.6",
     "@types/sinon": "^9.0.4",
     "@types/sinon-chai": "^3.2.4",