Do I need DFSR in a single server environment?

I have a 2012 Host, running a single 2012 Guest.  Guest is running as a DC with AD, DNS, DHCP, and File Services.  DFSR is running, and it gives a warning every time my back runs (Backup is running on Host).  Warning is The DFS Replication service stopped replication on volume F:......and long message about Database, yada yada yada.  

Do I need to run DFSR?  Again, single server, no file replication to different offices.  I'm not finding a clear answer to that question.

Second, Server Manager should, according to TechNet, have under the Tools option the ability to turn off DFSR.  I cannot find that option.  So, IF I can turn it off, can I simply disable the DFS Namespace and DFS Replication services?  

I would prefer eliminating rather than ignoring warnings.

Thanks