Remove demo specific lines from build.sh script

build.sh

@@ -12,23 +12,3 @@ mv app/static/assets/* app/static
 rm -rf app/static/assets
 rm -rf app/static/VERSION.txt
 rm -rf govuk_frontend.zip
-
-#####################################################################
-## The following is only required for the demos and can be removed ##
-#####################################################################
-
-# Remove existing GOV.UK Frontend test fixtures
-rm -rf govuk_components
-
-# Get new release source code and move to a directory
-curl -L https://github.com/alphagov/govuk-frontend/archive/v4.7.0.zip > govuk_frontend_source.zip
-unzip -o govuk_frontend_source.zip -d govuk_frontend_source
-mkdir govuk_components
-mv govuk_frontend_source/govuk-frontend-4.7.0/package/govuk/components/** govuk_components
-
-# Remove all files apart from test fixtures json
-find govuk_components -type f ! -name 'fixtures.json' -delete
-
-# Tidy up
-rm -rf govuk_frontend_source
-rm -rf govuk_frontend_source.zip