Remove errant AGPL header from test file (#479)

python/vegafusion/tests/test_transformer.py

@@ -1,24 +1,8 @@
-# VegaFusion
-# Copyright (C) 2022, Jon Mease
-# 
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-# 
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-# 
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 import pandas as pd
 import pyarrow as pa
 from decimal import Decimal
 from vegafusion.transformer import to_arrow_table
 
-
 def test_to_arrow_expands_categoricals():
     # Build DataFrame with one categorical column
     df = pd.DataFrame({