veyron/examples/todos: remove unnecessary npm path in makefile. the PATH variable works just fine. :)
veyron/examples/todos: remove unnecessary npm path in makefile. the PATH variable works just fine. :)

Change-Id: Ie3ba38f6b45c8d1a84d8356fd2fe644d05d87957

vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref