Remove the limit on the number of simultaneous TCP queries
There was an artificial limit of 23 on the number of simultaneous pipelined queries in the single TCP connection. The new network managers is capable of handling "unlimited" (limited only by the TCP read buffer size ) queries similar to "unlimited" handling of the DNS queries receive over UDP.
Don't limit the number of TCP queries that we can process within a single TCP read callback.
Closes #3141 (closed)