Deprecate IWorkbenchPage#zoomOut() for removal

The method IWorkbenchPage#zoomOut() has never been implemented in the
sole interface implementation WorkbenchPage. All existing consumers rely
on the #toogleZoom() implementation. This change thus deprecates the
method for removal, as it has never been implemented and required and
will unlikely ever get implemented.

The related functionality of WorkbenchPage#unzoomAllPerspective() is
also unused, and since it's internal this change just removes it.

Author: HeikoKlare

bundles/org.eclipse.ui.workbench/eclipseui/org/eclipse/ui/IWorkbenchPage.java

@@ -1051,7 +1051,13 @@ IEditorPart openEditor(final IEditorInput input, final String editorId, final bo
 	 * does nothing.
 	 *
 	 * @since 3.2
+	 *
+	 * @deprecated this method has never been implemented; use
+	 *             {@link #toggleZoom(IWorkbenchPartReference)} to toggle between
+	 *             maximized and non-maximized state instead of explicitly zooming
+	 *             out
 	 */
+	@Deprecated(forRemoval = true, since = "2025-12")
 	void zoomOut();
 
 	/**

bundles/org.eclipse.ui.workbench/eclipseui/org/eclipse/ui/internal/WorkbenchPage.java

@@ -1809,23 +1809,12 @@ private boolean close(boolean save, boolean unsetPage) {
 		return true;
 	}
 
-	/**
-	 * Forces all perspectives on the page to zoom out.
-	 */
-	public void unzoomAllPerspectives() {
-		// TODO compat: we have no min/max behaviour
-	}
-
 	/**
 	 * Cleanup.
 	 */
 	public void dispose() {
 		legacyWindow = null;
 		largeFileLimitsPreferenceHandler.dispose();
-// // Always unzoom
-		// if (isZoomed()) {
-		// zoomOut();
-		// }
 		//
 		// // makeActiveEditor(null);
 		// // makeActive(null);
@@ -4350,7 +4339,7 @@ public void updateActionBars() {
 
 	@Override
 	public void zoomOut() {
-		// TODO compat: what does the zoom do?
+		// to be removed once interface method is removed
 	}
 
 	@Override