Revert "Add failing SSProperty to AMTL CAGRAD and MGDA"

This reverts commit ee27d3d.

Author: ValerianRey

tests/unit/aggregation/test_aligned_mtl.py

@@ -3,17 +3,11 @@
 
 from torchjd.aggregation import AlignedMTL
 
-from ._property_testers import (
-    ExpectedStructureProperty,
-    PermutationInvarianceProperty,
-    StrongStationarityProperty,
-)
+from ._property_testers import ExpectedStructureProperty, PermutationInvarianceProperty
 
 
 @mark.parametrize("aggregator", [AlignedMTL()])
-class TestAlignedMTL(
-    ExpectedStructureProperty, PermutationInvarianceProperty, StrongStationarityProperty
-):
+class TestAlignedMTL(ExpectedStructureProperty, PermutationInvarianceProperty):
     pass
 
 

tests/unit/aggregation/test_cagrad.py

@@ -8,15 +8,11 @@
 from torchjd.aggregation import CAGrad, Mean
 
 from ._inputs import typical_matrices
-from ._property_testers import (
-    ExpectedStructureProperty,
-    NonConflictingProperty,
-    StrongStationarityProperty,
-)
+from ._property_testers import ExpectedStructureProperty, NonConflictingProperty
 
 
 @mark.parametrize("aggregator", [CAGrad(c=0.5)])
-class TestCAGrad(ExpectedStructureProperty, StrongStationarityProperty):
+class TestCAGrad(ExpectedStructureProperty):
     pass
 
 

tests/unit/aggregation/test_mgda.py

@@ -9,17 +9,11 @@
     ExpectedStructureProperty,
     NonConflictingProperty,
     PermutationInvarianceProperty,
-    StrongStationarityProperty,
 )
 
 
 @mark.parametrize("aggregator", [MGDA()])
-class TestMGDA(
-    ExpectedStructureProperty,
-    NonConflictingProperty,
-    PermutationInvarianceProperty,
-    StrongStationarityProperty,
-):
+class TestMGDA(ExpectedStructureProperty, NonConflictingProperty, PermutationInvarianceProperty):
     pass