Fix: Remove print in FmToZ3 transformation

Author: jmhorcas

flamapy/metamodels/z3_metamodel/transformations/fm_to_z3.py

@@ -271,7 +271,6 @@ def _get_expression(self, node: Node, parent: Node) -> z3.ExprRef:
                                                                                 attr_name, 
                                                                                 attribute.attribute_type, 
                                                                                 None)
-                                    print(f'Created attribute variable for {feature_name}.{attr_name}')
                                 else:
                                     raise FlamaException(f'Unsupported attribute: {attr_name} in ' \
                                                          f'feature {feature_name}')