fix(docs): remove misleading docplaster (angular#3085)

RicardoVaranda · abdel-ships-it · commit 46324c04b3f2 · 2017-02-11T16:28:47.000+01:00
In this excerpt without the checkLogin method it might indicate to users that they have to create a new class.
diff --git a/public/docs/_examples/router/ts/app/auth-guard.service.3.ts b/public/docs/_examples/router/ts/app/auth-guard.service.3.ts
@@ -1,4 +1,3 @@
-// #docplaster
 // #docregion
 // #docregion can-activate-child
 import { Injectable }       from '@angular/core';

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,3 @@`
`1`		`-// #docplaster`
`2`	`1`	`// #docregion`
`3`	`2`	`// #docregion can-activate-child`
`4`	`3`	`import { Injectable } from '@angular/core';`