Revert "Bump tw-sketch (ntp)"
Revert "Bump tw-sketch (ntp)"

This reverts commit 2a310769c57c01d753019e549b22e0eea604ffc3.

input-output-hk/cardano-sl,input-output-hk/pos-haskell-prototype,input-output-hk/pos-haskell-prototype,input-output-hk/cardano-sl,input-output-hk/pos-haskell-prototype,input-output-hk/cardano-sl,input-output-hk/cardano-sl