Remove extra setMargin(..) Some lines after we can see a

setContentsMargins

Change-Id: I376129566c7df466a3413f001b42c670ee7c7022
Reviewed-by: hjk <hjk@qt.io>

src/libs/qmleditorwidgets/contextpanewidget.cpp

@@ -158,7 +158,6 @@ void DragWidget::enterEvent(QEvent *)
 ContextPaneWidget::ContextPaneWidget(QWidget *parent) : DragWidget(parent), m_currentWidget(0)
 {
     QGridLayout *layout = new QGridLayout(this);
-    layout->setMargin(0);
     layout->setContentsMargins(1, 1, 1, 1);
     layout->setSpacing(0);
     m_toolButton = new QToolButton(this);

src/libs/qmleditorwidgets/contextpanewidgetimage.cpp

@@ -884,7 +884,6 @@ PreviewDialog::PreviewDialog(QWidget *parent) : DragWidget(parent)
     QVBoxLayout *layout = new QVBoxLayout(this);
     QHBoxLayout *horizontalLayout = new QHBoxLayout();
     QHBoxLayout *horizontalLayout2 = new QHBoxLayout();
-    layout->setMargin(0);
     layout->setContentsMargins(2, 2, 2, 16);
     layout->setSpacing(4);
     QToolButton *toolButton = new QToolButton(this);

src/libs/utils/fancymainwindow.cpp

@@ -182,7 +182,6 @@ public:
         m_maximumActiveSize   = QSize(maxWidth, activeHeight);
 
         auto layout = new QHBoxLayout(this);
-        layout->setMargin(0);
         layout->setSpacing(0);
         layout->setContentsMargins(4, 0, 0, 0);
         layout->addWidget(m_titleLabel);

src/plugins/bineditor/bineditorplugin.cpp

@@ -368,7 +368,6 @@ public:
 
         auto l = new QHBoxLayout;
         auto w = new QWidget;
-        l->setMargin(0);
         l->setContentsMargins(0, 0, 5, 0);
         l->addStretch(1);
         l->addWidget(m_addressEdit);

src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp

@@ -637,7 +637,6 @@ ClangEditorDocumentProcessor::creatorForHeaderErrorDiagnosticWidget(
 
     return [firstHeaderErrorDiagnostic]() {
         auto vbox = new QVBoxLayout;
-        vbox->setMargin(0);
         vbox->setContentsMargins(10, 0, 0, 2);
         vbox->setSpacing(2);