Fix code review findings

• Type: User Story
• Resolution: Done
• Priority: P2: Important
• Fix Version/s: Qt 3D Studio 2.0 BETA1
• Affects Version/s: Development Snaphot 0.2.1
• Component/s: Editor Application, Runtime 1.x, Viewer Application 1.x
• Labels:

  None

For Gerrit Dashboard: QT3DS-279
#	Subject	Branch	Project	Status	CR	V
210203,2	Remove GetFileStat	master	qt3dstudio/qt3dstudio	Status: MERGED	+2	0
210204,2	Remove unused CBufferedInputStream::Read	master	qt3dstudio/qt3dstudio	Status: MERGED	+2	0
210205,2	Remove unused CFileOutputStream::Seek	master	qt3dstudio/qt3dstudio	Status: MERGED	+2	0
210207,2	Remove unused CWinRenderer::Scroll	master	qt3dstudio/qt3dstudio	Status: MERGED	+2	0
210219,2	Remove unused DLLVersion files	master	qt3dstudio/qt3dstudio	Status: MERGED	+2	0
210221,2	Remove unused Qt3DSRegistry files	master	qt3dstudio/qt3dstudio	Status: MERGED	+2	0
210223,2	Remove unused SystemInfo files	master	qt3dstudio/qt3dstudio	Status: MERGED	+2	0
210230,3	Clean up PaletteManager	master	qt3dstudio/qt3dstudio	Status: MERGED	+2	0
210237,2	Remove unused code from SceneView	master	qt3dstudio/qt3dstudio	Status: MERGED	+2	0
210324,2	Remove unused code in MainFrm	master	qt3dstudio/qt3dstudio	Status: MERGED	+2	0
210349,2	Remove unused CrashDlg	master	qt3dstudio/qt3dstudio	Status: MERGED	+2	0
222505,4	Remove Qt3DSExceptionClass and files needed by it	master	qt3dstudio/qt3dstudio	Status: MERGED	+2	0
222836,2	Fix issues in Qt3DSFileTools	master	qt3dstudio/qt3dstudio	Status: MERGED	+2	0
222952,2	Add missing implementation of FindPrevSortSibling	master	qt3dstudio/qt3dstudio	Status: MERGED	+2	0