CMakeProjectManager: Clean forward declaration

Change-Id: I47cb6fbac276554e548383fe6945fd5cd38386c6
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/cmakeprojectmanager/cmakecbpparser.h

@@ -38,7 +38,6 @@
 
 namespace ProjectExplorer {
 class FileNode;
-class Kit;
 } // namespace ProjectExplorer
 
 namespace CMakeProjectManager {

src/plugins/cmakeprojectmanager/cmakeeditor.h

@@ -32,7 +32,6 @@ namespace CMakeProjectManager {
 namespace Internal {
 
 class CMakeEditorWidget;
-class CMakeSettingsPage;
 
 class CMakeEditor : public TextEditor::BaseTextEditor
 {

src/plugins/cmakeprojectmanager/cmakefilecompletionassist.h

@@ -31,7 +31,6 @@
 namespace CMakeProjectManager {
 namespace Internal {
 
-class CMakeSettingsPage;
 
 class CMakeFileCompletionAssist : public TextEditor::KeywordsCompletionAssistProcessor
 {

src/plugins/cmakeprojectmanager/cmakeproject.h

@@ -41,10 +41,6 @@
 
 #include <memory>
 
-QT_BEGIN_NAMESPACE
-class QFileSystemWatcher;
-QT_END_NAMESPACE
-
 namespace CppTools { class CppProjectUpdater; }
 
 namespace CMakeProjectManager {

src/plugins/cmakeprojectmanager/cmakeprojectmanager.h

@@ -34,7 +34,6 @@ QT_END_NAMESPACE
 namespace CMakeProjectManager {
 namespace Internal {
 
-class CMakeSettingsPage;
 
 class CMakeManager : public QObject
 {

src/plugins/cmakeprojectmanager/cmakeprojectplugin.h

@@ -34,7 +34,6 @@ namespace Utils { class ParameterAction; }
 namespace CMakeProjectManager {
 
 class CMakeProject;
-class CMakeToolManager;
 
 namespace Internal {
 

src/plugins/cmakeprojectmanager/servermodereader.h

@@ -36,7 +36,6 @@
 namespace CMakeProjectManager {
 namespace Internal {
 
-class CMakeListsNode;
 
 class ServerModeReader : public BuildDirReader
 {