Remove enabling HPOS via old external plugin

.github/workflows/pr-build-and-e2e-tests.yml

@@ -147,8 +147,6 @@ jobs:
 
             - name: Load docker images and start containers.
               working-directory: plugins/woocommerce
-              env:
-                  ENABLE_HPOS: 0
               run: |
                   pnpm env:dev --filter=woocommerce
                   pnpm env:performance-init --filter=woocommerce

plugins/woocommerce/tests/performance/bin/init-sample-products.sh

@@ -1,7 +1,5 @@
 #!/bin/bash
 
-ENABLE_HPOS="${ENABLE_HPOS:-0}"
-
 echo "Initializing WooCommerce E2E"
 
 wp-env run tests-cli wp plugin activate woocommerce
@@ -32,9 +30,4 @@ wp-env run tests-cli wp import wp-content/plugins/woocommerce/sample-data/sample
 # install Storefront
 wp-env run tests-cli wp theme install storefront --activate
 
-if [ $ENABLE_HPOS == 1 ]; then
-	echo -e 'Enable High-Performance Order Tables\n'
-	wp-env run tests-cli wp plugin install https://gist.github.com/vedanshujain/564afec8f5e9235a1257994ed39b1449/archive/b031465052fc3e04b17624acbeeb2569ef4d5301.zip --activate
-fi
-
 echo "Success! Your E2E Test Environment is now ready."