Cleanup my Github Repos

After some consolidation i removed a lot of unused repositories on github, for example the cubietruck_sdk.git. All A20 based devices are supported through https://github.com/tjohann/a20_sdk.git repository. So there’s no need for different repos anymore. I also removed the baalue_sdk which is also supported within the a20_sdk.git. For the same reason changes will happen with the other baalue based repositories.