BackendImpl.java: Removed useless empty lines

Jean-Noel Rouvignac

30.15.2015 daae90976232783d313f63cbbc0df4e315ee95a7

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user-friendly-name=Program Obs\u0142uguj\u0105cy Po\u0142\u0105czenia
user-friendly-plural-name=Programy Obs\u0142uguj\u0105ce Po\u0142\u0105czenia