Remove the flow copy logic from build process
Remove the flow copy logic from build process

These should not be used anymore as we have written in the docs lately
libdef is now the easiest way to use flow with styled-components. Using
the sources as we did earlier generates a lot of errors that is hard to
avoid.

JamieDixon/styled-components,styled-components/styled-components,JamieDixon/styled-components,JamieDixon/styled-components,styled-components/styled-components,css-components/styled-components,styled-components/styled-components