CppTools: Remove unneeded include

Change-Id: I8d49ac57f7e78c975798892681588a0c6db5ef0e
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/cpptools/cppmodelmanager.h

@@ -27,7 +27,6 @@
 
 #include "cpptools_global.h"
 
-#include "cppmodelmanagersupport.h"
 #include "projectinfo.h"
 #include "projectpart.h"
 #include "projectpartheaderpath.h"
@@ -38,7 +37,6 @@
 #include <QObject>
 #include <QStringList>
 
-
 namespace Core {
 class IDocument;
 class IEditor;
@@ -54,6 +52,7 @@ class BaseEditorDocumentProcessor;
 class CppCompletionAssistProvider;
 class CppEditorDocumentHandle;
 class CppIndexingSupport;
+class ModelManagerSupportProvider;
 class RefactoringEngineInterface;
 class SymbolFinder;
 class WorkingCopy;