This patch removes histogram view `One Half', which seems to be
rarely used but holds a lot of data for JavaScript.
For example, there is a listing of how much data is generated for
JavaScript by MainHistogram, on dummy scenario with 50000 iterations:
Square Root Choice - 224 points
Sturges Formula - 17 points
Rice Rule - 74 points
One Half - 25000 points!!!
Removing this view causes HTML report to work much more faster.
In some cases (like given above) this actually revives the report.
Change-Id: I6f51e72b93084f57eaf8cc5a107a0dd103824944
c003d87467