Algorithm history script generation gives output parameters a value

[DanNixon]

Running the following script:

grouping_ws = CreateGroupingWorkspace(InstrumentName='IRIS', FixedGroupCount=10, ComponentName='graphite')

Gives the following script when exported to Python via the history dialog:

CreateGroupingWorkspace(InstrumentName='IRIS', FixedGroupCount=10, ComponentName='graphite', OutputWorkspace='grouping_ws', NumberGroupedSpectraResult=50, NumberGroupsResult=10)

This is attempting to assign values to two output properties: NumberGroupedSpectraResult and NumberGroupsResult.

This does not affect the algorithm but could be confusing to users, the only output properties that should be included in the script are workspace properties that define the name of the output workspace.

[DanNixon]

This issue was originally trac ticket 11128