Don't install texinfo and texlive packages in Travis-CI
Don't install texinfo and texlive packages in Travis-CI

These were required for building bleeding-edge-toolchain, but now the
toolchains are downloaded.
CezaryGapinski/distortos,CezaryGapinski/distortos,jasmin-j/distortos,DISTORTEC/distortos,DISTORTEC/distortos,jasmin-j/distortos,CezaryGapinski/distortos,jasmin-j/distortos,CezaryGapinski/distortos,jasmin-j/distortos,DISTORTEC/distortos,CezaryGapinski/distortos,DISTORTEC/distortos,jasmin-j/distortos