refactor: slash-and-burn Poll BuiltIn XBlock

Removes the built-in Poll XBlock implementation and all associated assets
now that the extracted `xblocks_contrib.poll.PollBlock` is the default
(USE_EXTRACTED_POLL_QUESTION_BLOCK has been True since extraction).

- Remove USE_EXTRACTED_POLL_QUESTION_BLOCK toggle from common.py
- Remove poll_question entrypoint from pyproject.toml
- Delete xmodule/poll_block.py (built-in class + shim)
- Delete xmodule/js/src/poll/ (JS assets)
- Delete lms/templates/poll.html
- Delete xmodule/static/css-builtin-blocks/PollBlockDisplay.css
- Remove PollBlockDisplay/PollBlockEditor webpack entries
- Delete xmodule/tests/test_poll.py (covered by xblocks-contrib)

Closes openedx/public-engineering#533

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: 2 people

lms/templates/poll.html

@@ -2077,14 +2077,6 @@ def add_optional_apps(optional_apps, installed_apps):
 # .. toggle_target_removal_date: 2026-04-10
 USE_EXTRACTED_ANNOTATABLE_BLOCK = True
 
-# .. toggle_name: USE_EXTRACTED_POLL_QUESTION_BLOCK
-# .. toggle_default: True
-# .. toggle_implementation: DjangoSetting
-# .. toggle_description: Enables the use of the extracted poll question XBlock, which has been shifted to the 'openedx/xblocks-contrib' repo.
-# .. toggle_use_cases: temporary
-# .. toggle_creation_date: 2024-11-10
-# .. toggle_target_removal_date: 2026-04-10
-USE_EXTRACTED_POLL_QUESTION_BLOCK = True
 
 # .. toggle_name: USE_EXTRACTED_LTI_BLOCK
 # .. toggle_default: True

openedx/envs/common.py

@@ -34,7 +34,6 @@ image = "xmodule.template_block:TranslateCustomTagBlock"
 library = "xmodule.library_root_xblock:LibraryRoot"
 library_content = "xmodule.library_content_block:LegacyLibraryContentBlock"
 lti = "xmodule.lti_block:LTIBlock"
-poll_question = "xmodule.poll_block:PollBlock"
 problem = "xmodule.capa_block:ProblemBlock"
 randomize = "xmodule.randomize_block:RandomizeBlock"
 sequential = "xmodule.seq_block:SequenceBlock"

pyproject.toml

@@ -50,13 +50,6 @@ module.exports = {
             './xmodule/js/src/xmodule.js',
             './xmodule/js/src/raw/edit/metadata-only.js'
         ],
-        PollBlockDisplay: [
-            './xmodule/js/src/xmodule.js',
-            './xmodule/js/src/javascript_loader.js',
-            './xmodule/js/src/poll/poll.js',
-            './xmodule/js/src/poll/poll_main.js'
-        ],
-        PollBlockEditor: './xmodule/js/src/xmodule.js',
         ProblemBlockDisplay: [
             './xmodule/js/src/xmodule.js',
             './xmodule/js/src/javascript_loader.js',

webpack.builtinblocks.config.js

@@ -421,24 +421,7 @@ module.exports = Merge.merge({
                         }
                     ]
                 },
-                {
-                    test: /xmodule\/js\/src\/poll\/poll.js/,
-                    use: [
-                        {
-                            loader: 'imports-loader',
-                            options: 'this=>window'
-                        }
-                    ]
-                },
-                {
-                    test: /xmodule\/js\/src\/poll\/poll_main.js/,
-                    use: [
-                        {
-                            loader: 'imports-loader',
-                            options: 'this=>window'
-                        }
-                    ]
-                },
+
                 {
                     test: /xmodule\/js\/src\/problem\/edit.js/,
                     use: [