Xgit.Repository.InMemory: Remove a line of code that is unreachable.

[scouten]

Changes in This Pull Request

I can't logically construct a way to get to this particular case, so why have it?

This returns Xgit to 100% code coverage.

Checklist

• This PR represents a single feature, fix, or change.
• All applicable changes have been documented. n/a
• There is test coverage for all changes. n/a
• All cases where a literal value is returned use the cover macro to force code coverage. n/a
• Any code ported from jgit maintains all existing copyright and license notices. n/a
• If new files are ported from jgit, the path to the corresponding file(s) is included in the header comment. n/a
• Any TO DO items (or similar) have been entered as GitHub issues and the link to that issue has been included in a comment. n/a

[codecov]

Codecov Report

Merging #245 into master will increase coverage by 0.07%.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           master   #245      +/-   ##
========================================
+ Coverage   99.92%   100%   +0.07%     
========================================
  Files          37     37              
  Lines        1325   1324       -1     
========================================
  Hits         1324   1324              
+ Misses          1      0       -1

Impacted Files	Coverage Δ
lib/xgit/repository/in_memory.ex	100% <ø> (+2.32%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update e513cb2...816550e. Read the comment docs.