AutoTest/ProjectExplorer: Move some unusual function towards only user

Change-Id: I1101a21871c8b1eac5c01afc033e5416850bc794
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/projectexplorer/project.cpp

@@ -249,11 +249,6 @@ Utils::FilePath Project::projectFilePath() const
     return document()->filePath();
 }
 
-bool Project::hasActiveBuildSettings() const
-{
-    return activeTarget() && BuildConfigurationFactory::find(activeTarget());
-}
-
 void Project::addTarget(std::unique_ptr<Target> &&t)
 {
     auto pointer = t.get();