style(base): Cleanup duplicate license declaration

    /opt/venv/lib/python3.11/site-packages/reuse/project.py:224: PendingDeprecationWarning: Copyright and licensing information for 'newsfragments/.gitignore' has been found in both 'newsfragments/.gitignore' and in the DEP5 file located at '.reuse/dep5'. The information for these two sources has been aggregated. In the future this behaviour will change, and you will need to explicitly enable aggregation. See <fsfe/reuse-tool#779>. You need do nothing yet. Run with `--suppress-deprecation` to hide this warning.
      warnings.warn(

newsfragments/.gitignore

@@ -1,7 +1,3 @@
-# SPDX-FileCopyrightText: 2023 Ross Patterson <[email protected]>
-#
-# SPDX-License-Identifier: MIT
-
 # https://towncrier.readthedocs.io/en/stable/quickstart.html#configuration
 !.git*
 !/*~