scripts: Remove unused imports in all Python scripts

Discovered with pylint3.

Upstream open-amp PR: https://github.com/OpenAMP/open-amp/pull/168

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
diff --git a/scripts/gitlint/zephyr_commit_rules.py b/scripts/gitlint/zephyr_commit_rules.py
index 67cd30e..639e07e 100644
--- a/scripts/gitlint/zephyr_commit_rules.py
+++ b/scripts/gitlint/zephyr_commit_rules.py
@@ -11,8 +11,8 @@
 that fits your needs.
 """
 
-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
 
 class BodyMinLineCount(CommitRule):