scripts: Fix unused variables and imports

Reported by the new CI check in
zephyrproject-rtos/ci-tools#37.

Signed-off-by: Ulf Magnusson <[email protected]>

Author: ulfalizer

scripts/ci/check_compliance.py

@@ -18,7 +18,7 @@
 from shutil import copyfile
 import json
 import tempfile
-from colorama import Fore, Back, Style
+from colorama import Fore, Style
 import glob
 import yaml
 
@@ -461,8 +461,6 @@ def parse_codeowners(self, git_root, codeowners):
 
                             all_files += files
 
-                        maintainers = match.group(2).split(" ")
-
         files = []
         for f in all_files:
             if os.path.isfile(f):
@@ -480,7 +478,6 @@ def run(self):
         commit = sh.git("diff","--name-only", "--diff-filter=A", self.commit_range, **sh_special_args)
         new_files = commit.split("\n")
         files_in_tree = sh.git("ls-files",  **sh_special_args).split("\n")
-        git = set(files_in_tree)
         if new_files:
             owned = self.parse_codeowners(git_root, codeowners)
             new_not_owned = []

scripts/ci/gitlint/zephyr_commit_rules.py

@@ -3,8 +3,8 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
-from gitlint.rules import CommitRule, RuleViolation, TitleRegexMatches, CommitMessageTitle, LineRule, CommitMessageBody
-from gitlint.options import IntOption, BoolOption, StrOption, ListOption
+from gitlint.rules import CommitRule, RuleViolation, CommitMessageTitle, LineRule, CommitMessageBody
+from gitlint.options import IntOption, StrOption
 import re
 
 """

scripts/ci/merge_junit.py

@@ -35,7 +35,6 @@ def merge_results(xml_files):
 
     for file_name in xml_files:
         tree = ET.parse(file_name)
-        test_suites = tree.getroot()
         test_suite = tree.findall('testsuite')[0];
         failures += int(test_suite.attrib['failures'])
         tests += int(test_suite.attrib['tests'])