MQTTnet.noUWP.sln: Removed no longer present MQTTnet.Server project.
MQTTnet.noUWP.sln: Removed no longer present MQTTnet.Server project.

chkr1011/MQTTnet,chkr1011/MQTTnet,chkr1011/MQTTnet,chkr1011/MQTTnet,chkr1011/MQTTnet