Remove Qt Deprecated Warnings Part 3 (#5457)

* StatCumProb, BundleResults, and Statistics

* remove unused xml readers

* remove XmlHandler from headers

* removed all XmlStackedHandler

* BundleSettings and BundleUtilities

* Uncomment Serialization Tests

* updated test docs

* Fixes to BundleSolution

* more BundleSolution fixes

* small fixes

* fix compile error

* more fixes