Remove EvenPodsSpread featuregate and related logic

pkg/apis/core/types.go

@@ -2764,7 +2764,6 @@ type PodSpec struct {
 	EnableServiceLinks *bool
 	// TopologySpreadConstraints describes how a group of pods ought to spread across topology
 	// domains. Scheduler will schedule pods in a way which abides by the constraints.
-	// This field is only honored by clusters that enable the EvenPodsSpread feature.
 	// All topologySpreadConstraints are ANDed.
 	// +optional
 	TopologySpreadConstraints []TopologySpreadConstraint

pkg/apis/core/validation/validation_test.go

@@ -14866,7 +14866,6 @@ func TestAlphaVolumePVCDataSource(t *testing.T) {
 }
 
 func TestValidateTopologySpreadConstraints(t *testing.T) {
-	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.EvenPodsSpread, true)()
 	testCases := []struct {
 		name        string
 		constraints []core.TopologySpreadConstraint