Project::removeTarget add missing return tru

Change-Id: Ifcf42827596fed48c9bf4c5f25910a586ebc18ef
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>

src/plugins/projectexplorer/project.cpp

@@ -189,6 +189,7 @@ bool Project::removeTarget(Target *target)
             setActiveTarget(d->m_targets.at(0));
     }
     delete target;
+    return true;
 }
 
 QList<Target *> Project::targets() const