BUG: remove bare mpl import

Chang She · Chang She · commit 927c7ea622f1 · 2012-07-12T23:36:57.000-04:00
diff --git a/pandas/tseries/converter.py b/pandas/tseries/converter.py
@@ -4,7 +4,6 @@
 
 from dateutil.relativedelta import relativedelta
 
-import matplotlib
 import matplotlib.units as units
 import matplotlib.dates as dates
 
