Slightly more robust removal of bug title prefix.
Slightly more robust removal of bug title prefix.

Change-Id: Ic37589222831d03ec48689a077b1eb16a9199385

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core