Matlab - problemas al borrar datos listbox

function varargout = listbox3(varargin)

clc

gui_Singleton = 1;

gui_State = struct('gui_Name',       mfilename, ...

                   'gui_Singleton',  gui_Singleton, ...

                   'gui_OpeningFcn', @listbox3_OpeningFcn, ...

                   'gui_OutputFcn',  @listbox3_OutputFcn, ...

                   'gui_LayoutFcn',  [] , ...

                   'gui_Callback',   []);

if nargin && ischar(varargin{1})

    gui_State.gui_Callback = str2func(varargin{1});

end

if nargout

    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});

else

    gui_mainfcn(gui_State, varargin{:});

end

function listbox3_OpeningFcn(hObject, eventdata, handles, varargin)

handles.output = hObject;

guidata(hObject, handles);

function varargout = listbox3_OutputFcn(hObject, eventdata, handles)

varargout{1} = handles.output;

function radiobutton1_Callback(hObject, eventdata, handles)

serie= [100 200 -900 789];

get(handles.listbox1,'Enable');

set(handles.listbox1,'string',serie);

guidata(hObject, handles);

function listbox1_Callback(hObject, eventdata, handles)

function Pasar_Callback(hObject, eventdata, handles)

t1=get(handles.listbox1,'value');

c1=get(handles.listbox1,'String');

c2=get(handles.listbox2,'String');

c2=[c2;c1(t1,:)];

set(handles.listbox2,'string',c2);

function listbox2_Callback(hObject, eventdata, handles)

function eliminar_Callback(hObject, eventdata, handles)

t=get(handles.listbox2,'value');

c=get(handles.listbox2,'string');

if size(c,1)>0

c(t,:)=[];

set(handles.listbox2,'string',c);

set(handles.listbox2,'value',1);

end