Commit [8105c2] default Maximize Restore History

Remove files just added to octave 2.9.5+

adb014 adb014 2006-06-02

removed bicubic.m
removed gradient.m
removed interp1.m
removed interp2.m
removed interpft.m
removed polyarea.m
removed quadl.m
bicubic.m
File was removed.
gradient.m
File was removed.
interp1.m
File was removed.
interp2.m
File was removed.
interpft.m
File was removed.
polyarea.m
File was removed.
quadl.m
File was removed.