Remove scripts now part of wp-plugin-dev-lib
Squashed 'bin/' content from commit 814a757

git-subtree-dir: bin
git-subtree-split: 814a757272f26e26dbca7745bfe321fd77bddca9
Merge commit 'fdfd426d0cc337c8abf888ee19d06cf66b530e1d' as 'bin'