reporting: remove unused graphSize option

@graph/graph.m

@@ -67,7 +67,6 @@ o.legendFontSize = 'tiny';
 o.showZeroline = false;
 o.zeroLineColor = 'black';
 
-o.graphSize = [];
 o.xTicks = [];
 o.xTickLabels = {};
 o.xTickLabelRotation = 0;
@@ -175,10 +174,6 @@ assert(isempty(o.data) || isdseries(o.data), ['@graph.graph: data must ' ...
                     'be a dseries']);
 assert(isempty(o.seriesToUse) || iscellstr(o.seriesToUse), ['@graph.graph: ' ...
                     'seriesToUse must be a cell array of string(s)']);
-
-assert(isempty(o.graphSize) || ((isfloat(o.graphSize) && length(o.graphSize) == 2)),...
-       ['@graph.graph: graphSize is specified as an array with two float ' ...
-        'entries, [width height]']);
 assert(isempty(o.xTicks) || isfloat(o.xTicks),...
        '@graph.graph: xTicks must be a numerical array');
 assert(iscellstr(o.xTickLabels) || (ischar(o.xTickLabels) && strcmpi(o.xTickLabels, 'ALL')), ...