Bug 126779 [IDE] Removed deprecated project capabilities API and implementation
It was created then deprecated before 2.0 shipped. As has never been API and we don't use it we should delete it.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/misc/ProjectCapabilitySelectionGroup.java
markCapabilityChecked(capability, capability);
        
        capabilitiesModified();
        notifyCheckStateListner();
    }
    /**
     * Handle the case of a capability being unchecked
     * by ensuring the action is allowed. 
     */
    private void handleCapabilityUnchecked(Capability capability) {
        ArrayList descriptors = (ArrayList) dependents.get(capability);
        
        
        
        
        
        
        if (descriptors.size() == 1 && descriptors.get(0) == capability) {
            
            capabilitiesModified();
            markCapabilityUnchecked(capability);
            
            
            
            if (registry.hasPrerequisites(capability)) {
                LinkedList capabilities = new LinkedList();