remove build-common submodule. THIS COMMIT WILL NOT COMPILE
Squashed 'build-common/' content from commit 667edee

git-subtree-dir: build-common
git-subtree-split: 667edee87f3dc5d44ac2c131c414379bf2880d22
Merge commit '24436e7ecbf760982c73c67ef4c2af7ca214608d' as 'build-common'