Cleanup logfileHeader in DefaultEntryLogger #1154

Job	Run time
PR Validation	7m 36s
Integration Tests	10m 41s
Build with windows on JDK 11	6m 34s
Backward compatibility tests	3m 38s
Compatibility Check Java8	19m 27s
Build with macos on JDK 11	4m 49s
Compatibility Check Java11	19m 55s
Bookie Tests	21m 1s
Compatibility Check Java17	19m 12s
Client Tests	36m 51s
OWASP Dependency Check	0s
Replication Tests	15m 14s
Remaining Tests	17m 41s
TLS Tests	13m 5s
StreamStorage Tests	18m 40s
Shell tests	33s
	3h 34m 57s

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