Update Dockerfile.acceptance

Author: fredvd

Dockerfile.acceptance

@@ -32,8 +32,6 @@ ENV LISTEN_PORT=${ZSERVER_PORT}
 ENV APPLY_PROFILES=plone.app.contenttypes:plone-content,plone.restapi:default,plone.volto:default-homepage
 # Packages to be used in configuration
 ENV CONFIGURE_PACKAGES=plone.app.contenttypes,plone.restapi,plone.volto,plone.volto.cors
-# https://github.com/pypa/pip/issues/12079
-ENV _PIP_USE_IMPORTLIB_METADATA=0
 
 RUN ln -s /data /app/var