Restore spinbox in RealTime activity (#809)

The problem was due to removed contents margins.

Here I just deleted debug coloring.

Resolves #809 (closed)

GUI/View/FitObjective/ParameterTuningDelegate.cpp

@@ -151,8 +151,6 @@ QWidget* ParameterTuningDelegate::createEditor(QWidget* parent, const QStyleOpti
     //... Construct return widget
 
     auto* result = new QWidget(parent);
-    result->setObjectName("ParameterTuner"); // DEBUG
-
     m_contentLayout = new QHBoxLayout(result);
     m_contentLayout->setContentsMargins(0, 0, 0, 0);
 
@@ -160,7 +158,6 @@ QWidget* ParameterTuningDelegate::createEditor(QWidget* parent, const QStyleOpti
 
     m_valueBox = new ScientificSpinBox();
     m_contentLayout->addWidget(m_valueBox);
-    m_valueBox->setObjectName("TunerBox");
     m_valueBox->setKeyboardTracking(false);
     m_valueBox->setFixedWidth(105);
     m_valueBox->setDecimals(m_currentItem->decimalsOfLink());