Clang: Remove PchManager

...which is the last dependency to libclang from the plugin.

Change-Id: I173ee7e9621912ec88706b4cf62db2b1dbcf7610
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

src/plugins/clangcodemodel/clangcompletionassistinterface.cpp

@@ -32,14 +32,10 @@
 
 #include "clangutils.h"
 
-#include <cpptools/cppmodelmanager.h>
 #include <cpptools/cpptoolsreuse.h>
-#include <cpptools/cppworkingcopy.h>
 
 #include <texteditor/texteditor.h>
 
-#include <cplusplus/Token.h>
-
 namespace ClangCodeModel {
 namespace Internal {
 
@@ -50,18 +46,13 @@ ClangCompletionAssistInterface::ClangCompletionAssistInterface(
         const QString &fileName,
         TextEditor::AssistReason reason,
         const CppTools::ProjectPart::HeaderPaths &headerPaths,
-        const PchInfo::Ptr &pchInfo,
         const CPlusPlus::LanguageFeatures &features)
     : AssistInterface(textEditorWidget->document(), position, fileName, reason)
     , m_ipcCommunicator(ipcCommunicator)
     , m_headerPaths(headerPaths)
-    , m_savedPchPointer(pchInfo)
     , m_languageFeatures(features)
     , m_textEditorWidget(textEditorWidget)
 {
-    m_unsavedFiles = Utils::createUnsavedFiles(
-                CppTools::CppModelManager::instance()->workingCopy(),
-                CppTools::modifiedFiles());
 }
 
 bool ClangCompletionAssistInterface::objcEnabled() const
@@ -94,11 +85,6 @@ IpcCommunicator &ClangCompletionAssistInterface::ipcCommunicator() const
     return m_ipcCommunicator;
 }
 
-const Utils::UnsavedFiles &ClangCompletionAssistInterface::unsavedFiles() const
-{
-    return m_unsavedFiles;
-}
-
 } // namespace Internal
 } // namespace ClangCodeModel