diff --git a/core/modules/block/templates/block.html.twig b/core/modules/block/templates/block.html.twig
index 236b3cfd1b9f2e0bdbdf3e8f1fdb6c37f146ff13..11cc17ed803c807b60ad4ed092e3d8ac1d2dce53 100644
--- a/core/modules/block/templates/block.html.twig
+++ b/core/modules/block/templates/block.html.twig
@@ -12,12 +12,6 @@
  *   - module: The module that provided this block plugin.
  *   - cache: The cache settings.
  *   - Block plugin specific settings will also be stored here.
- * - block - The full block entity.
- *   - label_hidden: The hidden block title value if the block was
- *     configured to hide the title ('label' is empty in this case).
- *   - module: The module that generated the block.
- *   - delta: An ID for the block, unique within each module.
- *   - region: The block region embedding the current block.
  * - content: The content of this block.
  * - attributes: array of HTML attributes populated by modules, intended to
  *   be added to the main container tag of this template.
diff --git a/core/modules/system/templates/block--system-menu-block.html.twig b/core/modules/system/templates/block--system-menu-block.html.twig
index b421113965026debd6554f742de45b2d28b995ec..617bb525b74274b1bd76300f6119b17e11cba720 100644
--- a/core/modules/system/templates/block--system-menu-block.html.twig
+++ b/core/modules/system/templates/block--system-menu-block.html.twig
@@ -12,12 +12,6 @@
  *   - module: The module that provided this block plugin.
  *   - cache: The cache settings.
  *   - Block plugin specific settings will also be stored here.
- * - block - The full block entity.
- *   - label_hidden: The hidden block title value if the block was
- *     configured to hide the title ('label' is empty in this case).
- *   - module: The module that generated the block.
- *   - delta: An ID for the block, unique within each module.
- *   - region: The block region embedding the current block.
  * - content: The content of this block.
  * - attributes: HTML attributes for the containing element.
  *   - id: A valid HTML ID and guaranteed unique.
diff --git a/core/themes/bartik/templates/block.html.twig b/core/themes/bartik/templates/block.html.twig
index 234af70370322af0b1eb64802f5470ef1b2253cb..f94013dd36600a5484d234bd8a881d953eb3add8 100644
--- a/core/themes/bartik/templates/block.html.twig
+++ b/core/themes/bartik/templates/block.html.twig
@@ -12,12 +12,6 @@
  *   - module: The module that provided this block plugin.
  *   - cache: The cache settings.
  *   - Block plugin specific settings will also be stored here.
- * - block - The full block entity.
- *   - label_hidden: The hidden block title value if the block was
- *     configured to hide the title ('label' is empty in this case).
- *   - module: The module that generated the block.
- *   - delta: An ID for the block, unique within each module.
- *   - region: The block region embedding the current block.
  * - content: The content of this block.
  * - attributes: array of HTML attributes populated by modules, intended to
  *   be added to the main container tag of this template.
diff --git a/core/themes/classy/templates/block/block--search-form-block.html.twig b/core/themes/classy/templates/block/block--search-form-block.html.twig
index 0b162dd3aa89713d333ff86aef58a97d5964116d..da280931148d7d4bc055b6700dd40b8fb4c854d9 100644
--- a/core/themes/classy/templates/block/block--search-form-block.html.twig
+++ b/core/themes/classy/templates/block/block--search-form-block.html.twig
@@ -12,12 +12,6 @@
  *   - module: The module that provided this block plugin.
  *   - cache: The cache settings.
  *   - Block plugin specific settings will also be stored here.
- * - block - The full block entity, including:
- *   - label_hidden: The hidden block title value if the block was
- *     configured to hide the title ('label' is empty in this case).
- *   - module: The module that generated the block.
- *   - delta: An ID for the block, unique within each module.
- *   - region: The block region embedding the current block.
  * - content: The content of this block.
  * - attributes: A list HTML attributes populated by modules, intended to
  *   be added to the main container tag of this template. Includes:
diff --git a/core/themes/classy/templates/block/block--system-menu-block.html.twig b/core/themes/classy/templates/block/block--system-menu-block.html.twig
index 0f4ec805bdb7d0e5423152cfb6eb49186236aa62..dcb019a6fb9541426b9fe38c4a71fe422d6a2ffe 100644
--- a/core/themes/classy/templates/block/block--system-menu-block.html.twig
+++ b/core/themes/classy/templates/block/block--system-menu-block.html.twig
@@ -12,12 +12,6 @@
  *   - module: The module that provided this block plugin.
  *   - cache: The cache settings.
  *   - Block plugin specific settings will also be stored here.
- * - block - The full block entity.
- *   - label_hidden: The hidden block title value if the block was
- *     configured to hide the title ('label' is empty in this case).
- *   - module: The module that generated the block.
- *   - delta: An ID for the block, unique within each module.
- *   - region: The block region embedding the current block.
  * - content: The content of this block.
  * - attributes: HTML attributes for the containing element.
  *   - id: A valid HTML ID and guaranteed unique.
diff --git a/core/themes/classy/templates/block/block.html.twig b/core/themes/classy/templates/block/block.html.twig
index ce5477af4d7e4fe47162d7f9ae50cb7243e2d1e2..8b584b916d994b44ca8e13a0b0af46342a720895 100644
--- a/core/themes/classy/templates/block/block.html.twig
+++ b/core/themes/classy/templates/block/block.html.twig
@@ -12,12 +12,6 @@
  *   - module: The module that provided this block plugin.
  *   - cache: The cache settings.
  *   - Block plugin specific settings will also be stored here.
- * - block - The full block entity.
- *   - label_hidden: The hidden block title value if the block was
- *     configured to hide the title ('label' is empty in this case).
- *   - module: The module that generated the block.
- *   - delta: An ID for the block, unique within each module.
- *   - region: The block region embedding the current block.
  * - content: The content of this block.
  * - attributes: array of HTML attributes populated by modules, intended to
  *   be added to the main container tag of this template.