Variables that do not appear to be used

[RaymondWise]

Re: #51 (comment)

Identified and commented on variables that don't appear to be used -

Variable	Module
Variable 'rangeColumn' is never assigned	bUTLAddIn.Chart_Processing
Variable 'ButlSeriesies' is never used	bUTLAddIn.Chart_Series
Variable 'int_left' is never used	bUTLAddIn.RandomCode
Variable 'int_top' is never used	bUTLAddIn.RandomCode
Variable 'rangeColumn' is never used	bUTLAddIn.Chart_Processing