use df.drop to delete a row from pandas dataframe
From https://stackoverflow.com/questions/14661701/how-to-drop-a-list-of-rows-from-pandas-dataframe
In [65]: df
Out[65]:
one two
one 1 4
two 2 3
three 3 2
four 4 1
In [66]: df.drop(df.index[[1,3]])
Out[66]:
one two
one 1 4
three 3 2