aresdns: remove partial timeout support
aresdns: remove partial timeout support

It will be handled by the library itself.

pavlix/netresolve,crossdistro/netresolve,andyvand/cygnetresolve,pavlix/netresolve,andyvand/cygnetresolve,pavlix/netresolve,crossdistro/netresolve,crossdistro/netresolve,andyvand/cygnetresolve