Preferences: Remove last Navigation Toolbar option

It is now configurable directly from navigation toolbar.

src/lib/preferences/preferences.cpp

@@ -216,7 +216,6 @@ Preferences::Preferences(BrowserWindow* window)
     connect(ui->instantBookmarksToolbar, SIGNAL(toggled(bool)), ui->showBookmarksToolbar, SLOT(setDisabled(bool)));
     connect(ui->showBookmarksToolbar, SIGNAL(toggled(bool)), ui->instantBookmarksToolbar, SLOT(setDisabled(bool)));
     ui->showNavigationToolbar->setChecked(settings.value("showNavigationToolbar", true).toBool());
-    ui->showWebSearchBar->setChecked(settings.value("showWebSearchBar", true).toBool());
     int currentSettingsPage = settings.value("settingsDialogPage", 0).toInt(0);
     settings.endGroup();
 
@@ -902,7 +901,6 @@ void Preferences::saveSettings()
     settings.setValue("instantBookmarksToolbar", ui->instantBookmarksToolbar->isChecked());
     settings.setValue("showBookmarksToolbar", ui->showBookmarksToolbar->isChecked());
     settings.setValue("showNavigationToolbar", ui->showNavigationToolbar->isChecked());
-    settings.setValue("showWebSearchBar", ui->showWebSearchBar->isChecked());
     settings.endGroup();
 
     //TABS

src/lib/preferences/preferences.ui

@@ -146,7 +146,7 @@
         <x>0</x>
         <y>0</y>
         <width>582</width>
-        <height>489</height>
+        <height>534</height>
        </rect>
       </property>
       <layout class="QVBoxLayout" name="verticalLayout_4">
@@ -594,13 +594,6 @@
                  </property>
                 </widget>
                </item>
-               <item row="2" column="0" colspan="2">
-                <widget class="QLabel" name="label_8">
-                 <property name="text">
-                  <string>&lt;b&gt;Navigation ToolBar&lt;/b&gt;</string>
-                 </property>
-                </widget>
-               </item>
                <item row="1" column="0">
                 <spacer name="horizontalSpacer_8">
                  <property name="orientation">
@@ -618,13 +611,6 @@
                 </spacer>
                </item>
                <item row="3" column="1">
-                <widget class="QCheckBox" name="showWebSearchBar">
-                 <property name="text">
-                  <string>Show web search bar</string>
-                 </property>
-                </widget>
-               </item>
-               <item row="5" column="1">
                 <spacer name="verticalSpacer_12">
                  <property name="orientation">
                   <enum>Qt::Vertical</enum>
@@ -2427,7 +2413,7 @@
                 <x>0</x>
                 <y>0</y>
                 <width>96</width>
-                <height>28</height>
+                <height>31</height>
                </rect>
               </property>
               <layout class="QHBoxLayout" name="horizontalLayout_14">