No longer load simplelayout.types.common in tests.

The dependency simplelayout.base -> simplelayout.types.common was eliminated [1].
Therefore we dont need to load sl.types.common in the tests anymore.

[1] https://github.com/4teamwork/simplelayout.base/pull/41
Merge pull request #166 from 4teamwork/jone-sl-types-common

No longer load simplelayout.types.common in tests.