Revert "build: finish replacing paver assets (#34554)" (#34700)

Reverts #34554, which causes compilation of edX.org's
legacy comprehensive theme to be skipped in their deployment pipeline.
We have not determined the precise cause yet, but it seems like the
compile_sass management command is not correctly getting the
list of comprehensive theme directories from Django settings.

cms/envs/common.py

@@ -39,7 +39,6 @@ When refering to XBlocks, we use the entry-point name. For example,
 # pylint: disable=unused-import, useless-suppression, wrong-import-order, wrong-import-position
 
 import importlib.util
-import json
 import os
 import sys
 
@@ -1276,11 +1275,14 @@ EDX_PLATFORM_REVISION = 'release'
 
 # Static content
 STATIC_URL = '/static/studio/'
-STATIC_ROOT = os.environ.get('STATIC_ROOT_CMS', ENV_ROOT / 'staticfiles' / 'studio')
+STATIC_ROOT = ENV_ROOT / "staticfiles" / 'studio'
 
 STATICFILES_DIRS = [
     COMMON_ROOT / "static",
     PROJECT_ROOT / "static",
+
+    # This is how you would use the textbook images locally
+    # ("book", ENV_ROOT / "book_images"),
 ]
 
 # Locale/Internationalization
@@ -1320,16 +1322,11 @@ COURSE_METADATA_EXPORT_STORAGE = 'django.core.files.storage.FileSystemStorage'
 EMBARGO_SITE_REDIRECT_URL = None
 
 ##### custom vendor plugin variables #####
-
-# .. setting_name: JS_ENV_EXTRA_CONFIG
-# .. setting_default: {}
-# .. setting_description: JavaScript code can access this dictionary using `process.env.JS_ENV_EXTRA_CONFIG`
-#   One of the current use cases for this is enabling custom TinyMCE plugins
-#   (TINYMCE_ADDITIONAL_PLUGINS) and overriding the TinyMCE configuration (TINYMCE_CONFIG_OVERRIDES).
-# .. setting_warning: This Django setting is DEPRECATED! Starting in Sumac, Webpack will no longer
-#   use Django settings. Please set the JS_ENV_EXTRA_CONFIG environment variable to an equivalent JSON
-#   string instead. For details, see: https://github.com/openedx/edx-platform/issues/31895
-JS_ENV_EXTRA_CONFIG = json.loads(os.environ.get('JS_ENV_EXTRA_CONFIG', '{}'))
+# JavaScript code can access this data using `process.env.JS_ENV_EXTRA_CONFIG`
+# One of the current use cases for this is enabling custom TinyMCE plugins
+# (TINYMCE_ADDITIONAL_PLUGINS) and overriding the TinyMCE configuration
+# (TINYMCE_CONFIG_OVERRIDES).
+JS_ENV_EXTRA_CONFIG = {}
 
 ############################### PIPELINE #######################################
 
@@ -1506,14 +1503,7 @@ WEBPACK_LOADER = {
         'STATS_FILE': os.path.join(STATIC_ROOT, 'webpack-worker-stats.json')
     }
 }
-
-# .. setting_name: WEBPACK_CONFIG_PATH
-# .. setting_default: "webpack.prod.config.js"
-# .. setting_description: Path to the Webpack configuration file. Used by Paver scripts.
-# .. setting_warning: This Django setting is DEPRECATED! Starting in Sumac, Webpack will no longer
-#   use Django settings. Please set the WEBPACK_CONFIG_PATH environment variable instead. For details,
-#   see: https://github.com/openedx/edx-platform/issues/31895
-WEBPACK_CONFIG_PATH = os.environ.get('WEBPACK_CONFIG_PATH', 'webpack.prod.config.js')
+WEBPACK_CONFIG_PATH = 'webpack.prod.config.js'
 
 
 ############################ SERVICE_VARIANT ##################################
@@ -2190,11 +2180,8 @@ CREDIT_PROVIDER_SECRET_KEYS = {}
 
 # .. setting_name: COMPREHENSIVE_THEME_DIRS
 # .. setting_default: []
-# .. setting_description: A list of paths to directories, each of which will
-#   be searched for comprehensive themes. Do not override this Django setting directly.
-#   Instead, set the COMPREHENSIVE_THEME_DIRS environment variable, using colons (:) to
-#   separate paths.
-COMPREHENSIVE_THEME_DIRS = os.environ.get("COMPREHENSIVE_THEME_DIRS", "").split(":")
+# .. setting_description: See LMS annotation.
+COMPREHENSIVE_THEME_DIRS = []
 
 # .. setting_name: COMPREHENSIVE_THEME_LOCALE_PATHS
 # .. setting_default: []