As it turns out this may be possible...
To suppress error messages about fonts, etc in the windows client you try and add the following to the ftdport2.ini which is located in the C:\Program Files (x86)\IBM\OnDemand Clients\V10.1\bin (assuming default install path).
[Misc]
Warn=FALSE
I really don't recommend this is most cases. if you are 100% certain you don't care about the warnings, give it a shot.
Thanks,
RR