This PR removes the only remaining WS_CARBON check from the codebase.

The Carbon backend is no longer used or supported in SWT, as all modern
macOS environments use the Cocoa backend (WS_COCOA). This check is now
obsolete and can be removed.

Author: elsazac

bundles/org.eclipse.jface/src/org/eclipse/jface/util/Util.java

@@ -560,7 +560,7 @@ public static boolean isWindows() {
 	 */
 	public static boolean isMac() {
 		final String ws = SWT.getPlatform();
-		return WS_CARBON.equals(ws) || WS_COCOA.equals(ws);
+		return WS_COCOA.equals(ws);
 	}
 
 	/**

bundles/org.eclipse.ui.workbench/eclipseui/org/eclipse/ui/internal/keys/BindingPersistence.java

@@ -519,7 +519,7 @@ private static final void readBindingsFromPreferences(final IMemento preferences
 	 * @param commandService            The command service for the workbench; must
 	 *                                  not be <code>null</code>.
 	 */
-	@SuppressWarnings("removal")
+	// @SuppressWarnings("removal")
 	private static final void readBindingsFromRegistry(final IConfigurationElement[] configurationElements,
 			final int configurationElementCount, final BindingManager bindingManager,
 			final CommandManager commandService) {
@@ -608,12 +608,6 @@ private static final void readBindingsFromRegistry(final IConfigurationElement[]
 
 			if (Util.WS_COCOA.equals(platform)) {
 				cocoaTempList.add(binding);
-			} else if (Util.WS_CARBON.equals(platform)) {
-				bindings.add(binding);
-				// temp work around ... simply honour the carbon
-				// bindings for cocoa.
-				cocoaTempList.add(new KeyBinding(keySequence, parameterizedCommand, schemeId, contextId, locale,
-						Util.WS_COCOA, null, Binding.SYSTEM));
 			} else {
 				bindings.add(binding);
 			}