Now that we are developing versions past 5.2, we are able to remove some stale code in the initial sync code path that checks whether the wireVersion < WireVersion::RESUMABLE_INITIAL_SYNC. For versions 5.0 and beyond, we should never expect to sync from a node lower than version 4.4, so we should always be able to assume the sync source supports resumable initial sync. 

Areas that we currently check WireVersion:

• all_database_cloner.cpp
• Multiple test cases in all_database_cloner_test.cpp
• collection_cloner.cpp
• test case in collection_cloner.cpp
• initial_sync_base_cloner.cpp
• initial_sync_cloner_test_fixture.cpp