Mark long-deprecated and unused constants for removal

Author: Neha Burnwal

ui/org.eclipse.pde.launching/src/org/eclipse/pde/launching/AbstractPDELaunchConfiguration.java

@@ -87,7 +87,7 @@ public abstract class AbstractPDELaunchConfiguration extends LaunchConfiguration
 	 * @since 3.8
 	 * @noreference This field is not intended to be referenced by clients.
 	 */
-	@Deprecated
+	@Deprecated(forRemoval = true, since = "2025-12")
 	public static boolean shouldVMAddModuleSystem = false;
 
 	private static final String PDE_LAUNCH_SHOW_COMMAND = "pde.launch.showcommandline"; //$NON-NLS-1$
@@ -539,7 +539,7 @@ protected void validatePluginDependencies(ILaunchConfiguration configuration, IP
 	 * @deprecated This method was wrongly added and is no longer used. It is a no-op now.
 	 * @noreference This method is not intended to be referenced by clients.
 	 */
-	@Deprecated
+	@Deprecated(forRemoval = true, since = "2025-12")
 	public static void updatePDELaunchConfigModuleSystem(boolean java9) {
 	}
 

ui/org.eclipse.pde.launching/src/org/eclipse/pde/launching/IPDELauncherConstants.java

@@ -110,7 +110,7 @@ public interface IPDELauncherConstants {
 	 *
 	 * @deprecated use IJavaLaunchConfigurationConstants.ATTR_JRE_CONTAINER_PATH
 	 */
-	@Deprecated
+	@Deprecated(forRemoval = true, since = "2025-12")
 	String VMINSTALL = "vminstall"; //$NON-NLS-1$
 
 	/**
@@ -136,7 +136,7 @@ public interface IPDELauncherConstants {
 	 *
 	 * @deprecated As of 3.6 the feature-based self-hosting option is not supported
 	 */
-	@Deprecated
+	@Deprecated(forRemoval = true, since = "2025-12")
 	String USEFEATURES = "usefeatures"; //$NON-NLS-1$
 
 	/**
@@ -267,7 +267,7 @@ public interface IPDELauncherConstants {
 	 * @deprecated This option is no longer supported in the launch config.  A recent selection is stored
 	 * in dialog settings.
 	 */
-	@Deprecated
+	@Deprecated(forRemoval = true, since = "2025-12")
 	String TRACING_SELECTED_PLUGIN = "selectedPlugin"; //$NON-NLS-1$
 
 	/**