MM-52004 : Remove stub types packages for moment-timezone, highlight-js, classnames (#22879)

webapp/channels/package.json

@@ -123,14 +123,12 @@
     "@types/bootstrap": "4.5.0",
     "@types/country-list": "2.1.0",
     "@types/enzyme": "3.10.11",
-    "@types/highlight.js": "10.1.0",
     "@types/jest": "26.0.24",
     "@types/katex": "0.11.0",
     "@types/lodash": "4.14.182",
     "@types/luxon": "3.0.2",
     "@types/mark.js": "8.11.6",
     "@types/marked": "0.7.4",
-    "@types/moment-timezone": "0.5.30",
     "@types/node": "16.3.1",
     "@types/react": "17.0.2",
     "@types/react-beautiful-dnd": "13.1.2",