Revert "Add various gcc-4.8 projects."

This reverts commit 3b8c693f5dd807805415febd1414c185d9f7d74b.
Revert "Add tools/studio/translation to AOSP master manifest"

This reverts commit 54575d3b3c07090f7a2b3a0baa10a6039995fb84.
Revert "Remove obsolete ping/ping6"

This reverts commit 188be78dfda7c088318f8809951c2073aafccd14.