How do I stop Matplotlib from adding this value in the corner in the figure attached? The figure is generated from two lists of data by the source code:
f, (ax1, ax2) = plt.subplots(2,1, sharex=True)
ax1.scatter(x, y1, marker=',',s=1, c='k')
ax1.axis([0., x, y1min, y1max])
ax2.scatter(x, y2, marker=',',s=1, c='k')
ax2.axis([0., x, y2min, y2max])