'Remove all indices involving the given column.
If the primary index is removed, the new primary
index will be the most recently added remaining
index.
Parameters
colname : str
Name of column'

def remove_indices(self, colname):

    col = self.columns[colname]
    for index in self.indices:
        try:
            index.col_position(col.info.name)
        except ValueError:
            pass
        else:
            for c in index.columns:
                c.info.indices.remove(index)
