Remove unused ThreadHelpBase base

Change-Id: I0e15184071fc2c1cb231ead98210d4a1654208e7

framework/inc/uiconfiguration/imagemanager.hxx

@@ -24,7 +24,6 @@
 #include <boost/unordered_map.hpp>
 #include <memory>
 
-#include <threadhelp/threadhelpbase.hxx>
 #include <stdtypes.h>
 #include <uiconfiguration/imagetype.hxx>
 
@@ -51,8 +50,7 @@
 namespace framework
 {
     class ImageManagerImpl;
-    class ImageManager :    private ThreadHelpBase                                        , // Struct for right initalization of mutex member! Must be first of baseclasses.
-                            public ::cppu::WeakImplHelper2< ::com::sun::star::ui::XImageManager, css::lang::XServiceInfo>
+    class ImageManager :    public ::cppu::WeakImplHelper2< ::com::sun::star::ui::XImageManager, css::lang::XServiceInfo>
     {
         public:
             ImageManager( const com::sun::star::uno::Reference< com::sun::star::uno::XComponentContext >& rxContext );

framework/source/uiconfiguration/imagemanager.cxx

@@ -19,7 +19,6 @@
 
 
 #include <uiconfiguration/imagemanager.hxx>
-#include <threadhelp/guard.hxx>
 #include <xml/imagesconfiguration.hxx>
 #include <uiconfiguration/graphicnameaccess.hxx>
 #include "imagemanagerimpl.hxx"
@@ -60,8 +59,7 @@ namespace framework
 {
 
 ImageManager::ImageManager( const uno::Reference< uno::XComponentContext >& rxContext ) :
-    ThreadHelpBase( &Application::GetSolarMutex() )
-    , m_pImpl( new ImageManagerImpl(rxContext, this, false) )
+    m_pImpl( new ImageManagerImpl(rxContext, this, false) )
 {
 }