[REF] *: stop mentioning "LESS" where this is not required

addons/im_livechat/views/im_livechat_channel_templates.xml

addons/web/static/src/js/views/form/form_renderer.js

addons/web/static/src/js/widgets/data_export.js

addons/web/static/src/less/utils.less

addons/web/static/src/less/variables.less

addons/web/static/tests/fields/basic_fields_tests.js

addons/web/views/report_templates.xml

addons/web/views/webclient_templates.xml

addons/web_editor/controllers/main.py

addons/web_editor/static/src/less/web_editor.variables.less

addons/web_editor/views/editor.xml

addons/website/views/website_templates.xml