ClassView: Remove duplicated icon

This change makes ClassView reuse the equivalent icon from CPlusPlus.

Change-Id: I2c83d8869dfdb3d8e8f229fc7cf768dee15442ca
Reviewed-by: Alessandro Portale <alessandro.portale@theqtcompany.com>

src/plugins/classview/classview.pro

@@ -24,6 +24,3 @@ SOURCES += \
     classviewsymbollocation.cpp \
     classviewtreeitemmodel.cpp \
     classviewutils.cpp
-
-RESOURCES += \
-    classview.qrc

src/plugins/classview/classview.qbs

@@ -13,7 +13,6 @@ QtcPlugin {
     Depends { name: "TextEditor" }
 
     files: [
-        "classview.qrc",
         "classviewconstants.h",
         "classviewmanager.cpp", "classviewmanager.h",
         "classviewnavigationwidget.cpp", "classviewnavigationwidget.h",

src/plugins/classview/classview.qrc

-<RCC>
-    <qresource prefix="/classview">
-        <file>images/hierarchicalmode.png</file>
-    </qresource>
-</RCC>

src/plugins/classview/classviewnavigationwidget.cpp

@@ -31,6 +31,9 @@
 #include "classviewconstants.h"
 
 #include <coreplugin/find/itemviewfind.h>
+
+#include <cplusplus/Icons.h>
+
 #include <utils/navigationtreeview.h>
 #include <utils/qtcassert.h>
 
@@ -170,7 +173,7 @@ QList<QToolButton *> NavigationWidget::createToolButtons()
         // create a button
         fullProjectsModeButton = new QToolButton();
         fullProjectsModeButton->setIcon(
-                QIcon(QLatin1String(":/classview/images/hierarchicalmode.png")));
+                    CPlusPlus::Icons::iconForType(CPlusPlus::Icons::ClassIconType));
         fullProjectsModeButton->setCheckable(true);
         fullProjectsModeButton->setToolTip(tr("Show Subprojects"));