Remove unnecessary test garbage files

Conflicts:
	community/kernel/src/test/java/org/neo4j/kernel/impl/core/TestRelationshipConcurrentDeleteAndLoadCachePoisoning.java
	community/server/src/main/java/org/neo4j/server/rrd/RrdFactory.java
	community/server/src/test/java/org/neo4j/server/ServerTestUtils.java