Issue #1991442 by tim.plunkett, benjy: Remove 'module' from block plugin configuration.

core/modules/aggregator/aggregator.module

core/modules/block/block.module

core/modules/block/config/schema/block.schema.yml

core/modules/block/lib/Drupal/block/BlockBase.php

core/modules/block/lib/Drupal/block/BlockPluginBag.php

...dules/block/lib/Drupal/block/Plugin/Type/BlockManager.php

...dules/block/lib/Drupal/block/Tests/BlockInterfaceTest.php

...les/block/lib/Drupal/block/Tests/BlockStorageUnitTest.php

.../modules/block/tests/Drupal/block/Tests/BlockBaseTest.php

...ests/modules/block_test/config/block.block.test_block.yml

core/modules/book/book.module

core/modules/comment/comment.module

core/modules/forum/forum.module

core/modules/language/language.module

.../modules/menu/lib/Drupal/menu/Tests/MenuCacheTagsTest.php

core/modules/menu/lib/Drupal/menu/Tests/MenuTest.php

core/modules/menu/menu.module

core/modules/node/node.module

core/modules/shortcut/shortcut.module

core/modules/statistics/statistics.module