Remote typings ignore from node gitignore (#3319)

Similar to #2608, it's the defacto tsc way now for adding typings locally.

Node.gitignore

@@ -44,9 +44,6 @@ jspm_packages/
 # Snowpack dependency directory (https://snowpack.dev/)
 web_modules/
 
-# TypeScript v1 declaration files
-typings/
-
 # TypeScript cache
 *.tsbuildinfo