Merge branch '3490872-2.0.0-rc1-remove-temporary' into '2.0.x'

...atterns_devel/src/Controller/UIPatternsDevelDeprecate.php

modules/ui_patterns_devel/ui_patterns_devel.info.yml

modules/ui_patterns_devel/ui_patterns_devel.links.menu.yml

modules/ui_patterns_devel/ui_patterns_devel.links.task.yml

modules/ui_patterns_devel/ui_patterns_devel.routing.yml

.../ui_patterns_legacy/src/Element/ComponentElementAlter.php

.../ui_patterns_library/src/Controller/LibraryController.php

...ui_patterns_library/src/Element/ComponentElementAlter.php

modules/ui_patterns_library/src/StoryPluginManager.php

src/Template/TwigExtension.php