Fix pipeline warning, remove irrelevant code

src/data/nodes/rounded_points.cpp

@@ -71,4 +71,3 @@ void RoundedPoints<GradingType::Combined>::recalculate() {
 
 template struct RoundedPoints<GradingType::Closed>;
 template struct RoundedPoints<GradingType::Open>;
-template struct RoundedPoints<GradingType::Combined>;

src/view/main_window/grade_histogram.cpp

@@ -109,14 +109,10 @@ GradeHistogram::GradeHistogram(const QList<GradingType> &gradingTypes,
     setInteractive(false);
     chart()->setMinimumSize(400, 200);
 
-    // todo: move to global config variable
-#if 0
-    chart()->setAnimationOptions(QChart::NoAnimation);
-#else
+    // Animation settings
     chart()->setAnimationOptions(QChart::SeriesAnimations);
     chart()->setAnimationEasingCurve(QEasingCurve::Linear);
     chart()->setAnimationDuration(50);
-#endif
 
     // receive update when grades change
     connect(&DataManager::getInstance(), &DataManager::gradesChanged, this,