Remove all statement

Author: MaximLippeveld

src/scip/masking/__init__.py

@@ -15,8 +15,6 @@
 # You should have received a copy of the GNU General Public License
 # along with SCIP.  If not, see <http://www.gnu.org/licenses/>.
 
-__all__ = ["mask"]
-
 from typing import Mapping, Any, List
 
 import numpy