Remove local url-for from any samples.

[qtrfeast]

From pedestal/pedestal#114, we would like to remove the usage of local url-for definitions in any samples where they occur.

[clojens]

These are automatically accounted for, meaning they can just be removed or does something else need to change with it? Service template still generates these.

[qtrfeast]

I'd say the process should be:

1. Complete pedestal/pedestal#114 (remove url-for from templates and verify everything is still peachy)
2. Re-generate service samples w/o def url-for

[clojens]

Yeah that's what I'm doing anyway, seems there is nothing broken due to that so far.