Delete deprecated README.md file
Delete deprecated README.md file

Reviewed By: strulovich

Differential Revision: D19187190

fbshipit-source-id: 26311178fc1668f0562253e31521ec97e77198a5

facebookincubator/ktfmt,facebookincubator/ktfmt,facebookincubator/ktfmt,facebookincubator/ktfmt,facebookincubator/ktfmt