Fix matrix model

shared/workspaces/workspaces/capability/schema.py

@@ -973,12 +973,6 @@ matrix_capabilities = sa.Table(
     Base.metadata,
     sa.Column("matrix_id", sa.Integer, sa.ForeignKey("casa_matrix_casa_versions.matrix_id")),
     sa.Column("capability_name", sa.String, sa.ForeignKey("capabilities.capability_name")),
-    sa.ForeignKeyConstraint(
-        ["matrix_id"], ["casa_matrix_casa_versions.matrix_id"], name="casa_matrix_capabilities_matrix_id_fkey"
-    ),
-    sa.ForeignKeyConstraint(
-        ["capability_name"], ["capabilities.capability_name"], name="casa_matrix_capabilities_capability_name_fkey"
-    ),
 )