misc: remove references to sips (#32224)

It broke get_backends().

eopayment/__init__.py

@@ -86,7 +86,7 @@ def get_backend(kind):
     return module.Payment
 
 
-__BACKENDS = [DUMMY, SIPS, SIPS2, SYSTEMPAY, OGONE, PAYBOX, PAYZEN, TIPI, PAYFIP_WS, KEYWARE, MOLLIE, SAGA]
+__BACKENDS = [DUMMY, SIPS2, SYSTEMPAY, OGONE, PAYBOX, PAYZEN, TIPI, PAYFIP_WS, KEYWARE, MOLLIE, SAGA]
 
 
 def get_backends():

tests/test_misc.py

@@ -0,0 +1,22 @@
+# eopayment - online payment library
+# Copyright (C) 2011-2022 Entr'ouvert
+#
+# 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 eopayment
+
+
+def test_get_backends():
+    assert len(eopayment.get_backends()) > 1