CMake: Simplify reparsing code

This still fixes the parsing issue when switching build configurations,
but the code is simpler.

Change-Id: I5748788224c5b49399550c33bcef592f193cfa8a
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>

src/plugins/cmakeprojectmanager/cmakebuildconfiguration.h

@@ -73,7 +73,7 @@ public:
 
     bool isParsing() const;
 
-    void parse();
+    void maybeForceReparse();
     void resetData();
     bool persistCMakeState();
 
@@ -93,7 +93,6 @@ protected:
 
 private:
     void ctor();
-    void maybeForceReparse();
     QList<ConfigModel::DataItem> completeCMakeConfiguration() const;
     void setCurrentCMakeConfiguration(const QList<ConfigModel::DataItem> &items);