Change clamping of update interval of SpeedPlotView::Averager

Don't clamp elapsed time of SpeedPlotView::Averager on resolution. Since
it may cause minor discrepencies across different Averagers with
different resolution for same speed update.

src/gui/properties/speedplotview.cpp

@@ -120,8 +120,7 @@ bool SpeedPlotView::Averager::push(const SampleData &sampleData)
 
     // system may go to sleep, that can cause very big elapsed interval
     const milliseconds updateInterval {static_cast<int64_t>(BitTorrent::Session::instance()->refreshInterval() * 1.25)};
-    const milliseconds maxElapsed {std::max(updateInterval, m_resolution)};
-    const milliseconds elapsed {std::min(milliseconds {m_lastSampleTime.elapsed()}, maxElapsed)};
+    const milliseconds elapsed {std::min(milliseconds {m_lastSampleTime.elapsed()}, updateInterval)};
     if (elapsed < m_resolution)
         return false; // still accumulating