Remove unused import from instrument package

Author: winniehell

src/bika/lims/browser/instrument.py

@@ -28,7 +28,6 @@
 from bika.lims.browser.bika_listing import BikaListingView
 from bika.lims.browser.chart.analyses import EvolutionChart
 from bika.lims.browser.resultsimport.autoimportlogs import AutoImportLogsView
-from bika.lims.browser.viewlets import InstrumentQCFailuresViewlet
 from bika.lims.content.instrumentmaintenancetask import \
     InstrumentMaintenanceTaskStatuses as mstatus
 from bika.lims.utils import get_image