Revert "Set all cabal flags to True by default"
Revert "Set all cabal flags to True by default"

This reverts commit 4df43c887aba20d25b0b63ffa2abf64e2f92ba2b.

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