tests: Remove unused import
tests: Remove unused import

Thanks pylint

sinkap/trappy,joelagnel/trappy,ARM-software/trappy,sinkap/trappy,JaviMerino/trappy,ARM-software/trappy,ARM-software/trappy,bjackman/trappy,bjackman/trappy,JaviMerino/trappy,joelagnel/trappy,joelagnel/trappy,sinkap/trappy,bjackman/trappy,JaviMerino/trappy,sinkap/trappy,joelagnel/trappy,bjackman/trappy,ARM-software/trappy