chromite: shorten, or suppress, slightly overlong pydoc summary lines.

Where it was easy to take a word out, do that. Otherwise suppress.

To avoid --no-verify, remove "(optional)" from pydoc in
cbuildbot/commands.py because it triggers the lint,
`docstring-deprecated-annotations`.

Address some stragglers that have crept in since these CLs were first
made.

BUG=b:233893248
TEST=cros lint + CQ

Change-Id: If0e48e6a7b0a5cfe3668854ec58b6665724ca215
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/4560885
Commit-Queue: Trent Apted <tapted@chromium.org>
Tested-by: Trent Apted <tapted@chromium.org>
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
diff --git a/scripts/tricium_clang_tidy.py b/scripts/tricium_clang_tidy.py
index ed9071f..c394e9b 100644
--- a/scripts/tricium_clang_tidy.py
+++ b/scripts/tricium_clang_tidy.py
@@ -331,7 +331,7 @@
     """Info about an exception that can be sent across processes."""
 
     def __init__(self):
-        """Builds an instance; only intended to be called from `except` blocks."""
+        """Builds instance; only intended to be called from `except` blocks."""
         self._str = traceback.format_exc()
 
     def __str__(self):
@@ -452,7 +452,7 @@
 def collect_lints(
     lint_tmpdir: Path, yaml_pool: multiprocessing.Pool
 ) -> Set[TidyDiagnostic]:
-    """Collects the lints for a given directory filled with linting artifacts."""
+    """Collects lints for a given directory filled with linting artifacts."""
     json_files = list(lint_tmpdir.glob("*.json"))
     pending_parses = yaml_pool.imap(parse_tidy_invocation, json_files)