Removed duplicate times from Bollig_2016 s27.0c files

[svalder]

Similar to PR #161 the s27.0c files in Bollig_2016 had multiple lines with the exact same time stamp. This in turn causes an error in scipy.interpolate.pchip.

This PR deletes these lines following the resolution in PR #161.

Note: the mean energy are very similar but the luminosities in each example appear higher.

[JostMigenda]

Hm … unit tests all succeed and the integration tests themselves also succeed; the failure occurs in the last step (posting benchmark results here) and is unrelated to this change. (Though unfortunately, the error message is vague enough that I can’t tell what it is related to.) So I’d suggest we go ahead, merge this PR and then wait until the next PR to see whether this is a temporary issue and resolves itself or whether we need to fix the integration test workflow?

[sybenzvi]

I agree @JostMigenda, I can't figure out why the integration test fails and there is no good reason why this change is at fault. I will try to merge the branch anyway.