Version 0.44.0 adds extra whitespace in Ads templates

[BenRKarl]

Sort of an odd one, but starting in 0.44.0 we started seeing a single extra space in the generated version of this file

[BenRKarl]

To illustrate, the generated code looks like:

# distributed under the License is distributed on an "AS IS" BASIS,             
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.      
# See the License for the specific language governing permissions and           
# limitations under the License.                                                
#
 import importlib
import sys