CppTools/Clang: Remove InMemoryInfo

...nowadays we only need the working copy.

Change-Id: I30924b3c5dc68b428d6c10f6ba015b0640b476d2
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

src/plugins/clangcodemodel/clangeditordocumentparser.h

@@ -43,7 +43,7 @@ public:
     ClangEditorDocumentParser(const QString &filePath);
 
 private:
-    void updateHelper(const BaseEditorDocumentParser::InMemoryInfo &) override;
+    void updateHelper(const CppTools::WorkingCopy &) override;
 };
 
 } // namespace ClangCodeModel