if you want to hide wires simply use wire labels it will reduce the cluttering.. you can also use terminals for input and outputs and label them as requires.
If i am understanding it right, i guess you mean to hide wire and still want the connection, right?
If yes, then one way to do it is to use "DEFAULT" under "TERMINALS" which is located at left column which contains Virtual instrument modes and other options .. If you are using DEFAULT, then use it at both end of the wire and Give the same string value .. See the picture :