some tools still use removed matplotlib.use('Agg',warn=False) syntax

[EricDeveaud]

Hello,

FYI some tools use pre 3.3 matplotlib syntax, so fail with recent mpl ones

programs/e2spt_hac.py:	matplotlib.use('Agg',warn=False)
programs/e2spt_autoboxer.py:matplotlib.use('Agg',warn=False)

same for some examples

examples/e2spt_tomosimjobs.py:matplotlib.use('Agg',warn=False)
examples/e2spt_timetest.py:matplotlib.use('Agg',warn=False)
examples/e2spt_icethicknessplot.py:	matplotlib.use('Agg',warn=False)
examples/e2spt_icethicknessplot.py:	matplotlib.use("TkAgg",warn=False)
examples/e2plotfig.py:#matplotlib.use('Agg',warn=False)
examples/e2plot_de_motion.py:matplotlib.use('Agg',warn=False)
examples/e2figureplot.py:matplotlib.use('Agg',warn=False)

regards

Eric