Remove check for method HttpServletRequest#getHeader and related test

[ghost]

Fixes: gh-6265

[ghost]

Not sure I understand the travis job. It says it's pending but when I look at details it seems to be in error? Can't find a message though

[jzheaux]

@shawnbiesan Thank you! I think we just need one change, which is to amend the commit message. Ideally, the commit title is under 50 characters, but if you want to be more descriptive than that, then you can add extra information to the commit body.

This will also bump the Travis build, which I'm looking into now.

[ghost]

OK, length is lessened (I assume force push is the way to go to amend to message? Haven't done a PR/fork on here before?). Looks like travis passed now too

[jzheaux]

Thanks for the PR, @shawnbiesan! This is now merged into master.

We hope that you will contribute again! Feel free to take any task you like, though we try to mark tasks that are naturally a little better for the community with a help wanted label.