minor, removing submodule
Squashed 'src/script/lib/tone.js/' content from commit 15b43ad

git-subtree-dir: src/script/lib/tone.js
git-subtree-split: 15b43ad592c9d1664249c40cff3da7c519f7e86e
Merge commit 'd87992d6778345d04f1f07d8e9649c068d76582f' as 'src/script/lib/tone.js'