RFR: Do not catch NoSuchElementException in HgOpenJDKImport

[Erik Duveblad via github.com]

Hi all,

this patch removes catching `NoSuchElementException` in the `main` method for `HgOpenJDKImport` to ease debugging.

## Testing
- [x] `sh gradlew test` passes on Linux x86_64

Thanks,
Erik

----------------

Commits:
 - 5536e051:	Do not catch NoSuchElementException in HgOpenJDKImport

Pull request:
https://git.openjdk.java.net/skara/pull/70

Webrev:
https://webrevs.openjdk.java.net/skara/70/webrev.00

Patch:
https://git.openjdk.java.net/skara/pull/70.diff

Fetch command:
git fetch https://git.openjdk.java.net/skara pull/70/head:pull/70