adjust imports

Author: mmatera

pymathics/vectorizedplot/plot_plot.py

@@ -5,7 +5,6 @@
 """
 
 from abc import ABC
-from functools import lru_cache
 from typing import Callable
 
 import numpy as np

test/helper.py

@@ -2,6 +2,7 @@
 import time
 from typing import Optional
 
+from mathics.core.element import BaseElement
 from mathics.core.load_builtin import import_and_load_builtins
 from mathics.core.symbols import Symbol
 from mathics.session import MathicsSession

test/test_plot_detail.py

@@ -92,7 +92,6 @@
 from mathics.core.expression import Expression
 from mathics.core.symbols import Symbol
 from mathics.core.util import print_expression_tree
-from mathics.session import MathicsSession
 
 from .svg_outline import outline_svg