Human: removing property from dictionary. Assistant: 
Here is a Python function for removing property from dictionary

import copy

def remove_property(dictionary, property_name):
    """Removes property from dictionary.

    If property_name is not in dictionary, returns None.
    """
    if property_name not in dictionary:
        return None
    del dictionary[property_name]
    return dictionary

# Enter the dictionary
dictionary = {"key1": "value1", "key2": "value2"}

# Enter the property name
property_name = "key1"

# Calling the function
print((remove_property(dictionary, property_name)))

#Example Output
# {'key2': 'value2'}

#Remember to inspect code for bugs.