Remove deprecated test for 'proxy' parameter in BrowserConfig and update .gitignore to include test_scripts directory.

Author: Ahmed-Tawfik94

.gitignore

@@ -265,7 +265,7 @@ CLAUDE.md
 tests/**/test_site
 tests/**/reports
 tests/**/benchmark_reports
-
+test_scripts/
 docs/**/data
 .codecat/