tests: no need to remove *.pyc before docker build
tests: no need to remove *.pyc before docker build

because they are already excluded by .dockerignore. In addition the
--no-run-if-empty option is not implemented on some operating systems
and will fail.

conorsch/securedrop,ehartsuyker/securedrop,conorsch/securedrop,ehartsuyker/securedrop,ehartsuyker/securedrop,ehartsuyker/securedrop,conorsch/securedrop,ehartsuyker/securedrop,heartsucker/securedrop,conorsch/securedrop,conorsch/securedrop,heartsucker/securedrop,heartsucker/securedrop,heartsucker/securedrop,ehartsuyker/securedrop,heartsucker/securedrop