pom.xml has unnecessary <start-class>

[Eric Dahl]

I was confused to see that the pom.xml includes:

<properties>
    <start-class>hello.Application</start-class>
</properties>

since the main documentation doesn't include references to it. It's unnecessary and adds complexity for a getting started guide.

I was about to submit a pull request to remove it, but then I saw that all of the spring-guides include it. Possibly there's some reason for keeping it?

[Dave Syer]

No reason I know of to have it everywhere. As a learning tool maybe useful to have it once (in the gs-spring-boot guide maybe). I think it's just a remnant.

[Roy Clarkson]

It's a remnant.

[Greg L. Turnquist]

Resolved via 92403fe