CMakeProjectManager: Don't use typed enum where it is unrelevant

It confuses lupdate (QTBUG-36589), and is totally unrelevant in this
case.

Change-Id: I65444fcdb62b7d95de9f22025272508aa3bf272e
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/cmakeprojectmanager/cmakebuildconfiguration.h

@@ -97,7 +97,7 @@ private:
 
     bool isParsing() const;
 
-    enum ForceEnabledChanged : quint8 { False, True };
+    enum ForceEnabledChanged { False, True };
     void clearError(ForceEnabledChanged fec = ForceEnabledChanged::False);
 
     void setBuildTargets(const QList<CMakeBuildTarget> &targets);