Fixed gitignore filters for build subfolders in images folder (#185)

* Fixed gitignore filters for build subfolders in images folder

* build filter rule updated

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Co-authored-by: Kai Gräper <160226396+kgraeper@users.noreply.github.com>

Author: mauro-mulatero

.gitignore

@@ -26,6 +26,5 @@ __pycache__/
 /score_*/
 /.gita/
 /.gita-workspace.csv
-build
-!images/autosd_x86_64/build/
+/build
 artifacts