[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

mypy/test/testreports.py

@@ -2,10 +2,9 @@
 
 from __future__ import annotations
 
-import tempfile
 import textwrap
 
-from mypy.report import CoberturaPackage, CoberturaXmlReporter, Reports, get_line_rate
+from mypy.report import CoberturaPackage, get_line_rate
 from mypy.test.helpers import Suite, assert_equal
 
 try: