coverity#1202901 Uncaught exception
coverity#1202901 Uncaught exception

and probably gadzillions of other uncaught exception warnings

this exception can't actually be thrown because all possible InsertOperation
conditions are already handled.

Change-Id: I176c5e253e8b1092a060fc066c2e03dae3cea343

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