Kill `-XX:-UseSplitVerifier`. (#4777)
Kill `-XX:-UseSplitVerifier`. (#4777)

We no longer use emma for code coverage and this eliminates the
following warning:
```
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option UseSplitVerifier; support was removed in 8.0"
```
pantsbuild/pants,tdyas/pants,foursquare/pants,benjyw/pants,UnrememberMe/pants,baroquebobcat/pants,benjyw/pants,benjyw/pants,fkorotkov/pants,wisechengyi/pants,fkorotkov/pants,UnrememberMe/pants,baroquebobcat/pants,baroquebobcat/pants,tdyas/pants,twitter/pants,baroquebobcat/pants,benjyw/pants,fkorotkov/pants,wisechengyi/pants,15Dkatz/pants,pantsbuild/pants,15Dkatz/pants,tdyas/pants,twitter/pants,baroquebobcat/pants,twitter/pants,foursquare/pants,twitter/pants,wisechengyi/pants,foursquare/pants,foursquare/pants,fkorotkov/pants,pantsbuild/pants,baroquebobcat/pants,tdyas/pants,15Dkatz/pants,wisechengyi/pants,baroquebobcat/pants,15Dkatz/pants,wisechengyi/pants,tdyas/pants,foursquare/pants,UnrememberMe/pants,tdyas/pants,tdyas/pants,fkorotkov/pants,fkorotkov/pants,UnrememberMe/pants,wisechengyi/pants,wisechengyi/pants,twitter/pants,twitter/pants,fkorotkov/pants,foursquare/pants,baroquebobcat/pants,jsirois/pants,jsirois/pants,wisechengyi/pants,15Dkatz/pants,15Dkatz/pants,UnrememberMe/pants,UnrememberMe/pants,benjyw/pants,tdyas/pants,tdyas/pants,foursquare/pants,benjyw/pants,pantsbuild/pants,twitter/pants,pantsbuild/pants,foursquare/pants,UnrememberMe/pants,twitter/pants,pantsbuild/pants,jsirois/pants,baroquebobcat/pants,benjyw/pants,15Dkatz/pants,wisechengyi/pants,pantsbuild/pants,15Dkatz/pants,fkorotkov/pants,UnrememberMe/pants,foursquare/pants,twitter/pants,UnrememberMe/pants