Revert "Filter: connect to the returnPressed signal of the line edit."
Revert "Filter: connect to the returnPressed signal of the line edit."

This reverts commit b05100eaad14cdb03102b2164dab3930815f4aa1.

evdmade01/dact,rug-compling/dact,rug-compling/dact,evdmade01/dact,evdmade01/dact