Revert "Handle non-bzipped data also in AsciicastDecorator"
Revert "Handle non-bzipped data also in AsciicastDecorator"

This reverts commit 9d08c170874727d2d947667fb05a473d5601fcee.

asciinema/asciinema-server,radare/radare.tv,SunDi3yansyah/asciinema.org,SunDi3yansyah/asciinema.org,SunDi3yansyah/asciinema.org,SunDi3yansyah/asciinema.org,asciinema/asciinema.org,SunDi3yansyah/asciinema.org,asciinema/asciinema.org,asciinema/asciinema.org,asciinema/asciinema-server,radare/radare.tv,radare/radare.tv,radare/radare.tv,asciinema/asciinema-server,asciinema/asciinema-server,asciinema/asciinema.org