Start removing Qt3 compatibility members.

MantidQt/API/src/AlgorithmDialog.cpp

MantidQt/API/src/AlgorithmPropertiesWidget.cpp

MantidQt/API/src/MdPlottingCmapsProvider.cpp

MantidQt/API/src/MdSettings.cpp

MantidQt/API/src/PropertyWidget.cpp

MantidQt/API/src/RepoModel.cpp

...CustomDialogs/src/ConvertTableToMatrixWorkspaceDialog.cpp

MantidQt/CustomDialogs/src/FitDialog.cpp

MantidQt/CustomDialogs/src/LoadDialog.cpp

MantidQt/CustomDialogs/src/SortTableWorkspaceDialog.cpp

MantidQt/CustomDialogs/src/StartLiveDataDialog.cpp

MantidQt/CustomInterfaces/src/DataComparison.cpp

MantidQt/CustomInterfaces/src/Indirect/ApplyPaalmanPings.cpp

...Qt/CustomInterfaces/src/Indirect/ContainerSubtraction.cpp

MantidQt/CustomInterfaces/src/Indirect/ConvFit.cpp

...idQt/CustomInterfaces/src/Indirect/ISISEnergyTransfer.cpp

MantidQt/CustomInterfaces/src/Indirect/IndirectLoadILL.cpp

MantidQt/CustomInterfaces/src/Indirect/IndirectMolDyn.cpp

MantidQt/CustomInterfaces/src/Indirect/Quasi.cpp

MantidQt/CustomInterfaces/src/MantidEV.cpp