Icons cleanup: Remove unused icons and deduplicate identical pngs

Accordingly Adjust the svg element Ids to new png locations in the
source tree.

Change-Id: I717dd7165c571e69322a1cce8d609f49c6bc75bc
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/genericprojectmanager/CMakeLists.txt

@@ -12,7 +12,6 @@ add_qtc_plugin(GenericProjectManager
     genericproject.cpp genericproject.h
     genericprojectconstants.h
     genericprojectfileseditor.cpp genericprojectfileseditor.h
-    genericprojectmanager.qrc
     genericprojectplugin.cpp genericprojectplugin.h
     genericprojectwizard.cpp genericprojectwizard.h
 )

src/plugins/genericprojectmanager/genericprojectmanager.pro

@@ -16,5 +16,3 @@ SOURCES = genericproject.cpp \
     genericmakestep.cpp \
     genericbuildconfiguration.cpp \
     filesselectionwizardpage.cpp
-
-RESOURCES += genericprojectmanager.qrc

src/plugins/genericprojectmanager/genericprojectmanager.qrc

@@ -1,6 +0,0 @@
-<RCC>
-    <qresource prefix="/genericprojectmanager">
-        <file>images/genericprojectmanager.png</file>
-        <file>images/genericprojectmanager@2x.png</file>
-    </qresource>
-</RCC>

src/plugins/genericprojectmanager/genericprojectwizard.cpp

@@ -29,6 +29,7 @@
 
 #include <coreplugin/icore.h>
 #include <projectexplorer/projectexplorerconstants.h>
+#include <projectexplorer/projectexplorericons.h>
 #include <projectexplorer/customwizard/customwizard.h>
 
 #include <app/app_version.h>
@@ -112,7 +113,7 @@ QString GenericProjectWizardDialog::projectName() const
 GenericProjectWizard::GenericProjectWizard()
 {
     setSupportedProjectTypes({Constants::GENERICPROJECT_ID});
-    setIcon(QIcon(QLatin1String(":/genericprojectmanager/images/genericprojectmanager.png")));
+    setIcon(ProjectExplorer::Icons::WIZARD_IMPORT_AS_PROJECT.icon());
     setDisplayName(tr("Import Existing Project"));
     setId("Z.Makefile");
     setDescription(tr("Imports existing projects that do not use qmake, CMake or Autotools. "