Eliminate *Hello* message before PUT

From datasheet
2.3.12 set comm remote 
This command sets the ASCII string that is sent to the remote TCP client when the TCP 
port is opened, where is one or more characters up to a maximum of 32 (32 
bytes). If you do not wish to use a string, use a zero (0) as the parameter.
Default: HELLO
Example: set comm remote welcome // Set the string to welcome
Merge pull request #24 from MarcconiLab/Delete_msg_HELLO

Eliminate *Hello* message before PUT