unused files removed.

7 jobs for agent_new_fields in 2 minutes and 34 seconds
Name Stage Failure
failed
pattern Lint
Done processing ../../src/agent/open_file.cpp
Done processing ../../src/agent/parse.cpp
Done processing ../../src/agent/parse_config_file.cpp
Done processing ../../src/agent/parse_proxy_file.cpp
Done processing ../../src/agent/post.cpp
Done processing ../../src/agent/rotate_log_file.cpp
Done processing ../../src/agent/user_history.cpp
Total errors found: 8
ERROR: Job failed: exit code 1