Cancel tx JS (#4958)

* Remove transaction RPC

* Bumping multihash and libc

* Updating nanomsg

* bump nanomsg

* cancel tx

* cancel-tx-js

* cancel-tx-js

* cancel-tx-js

* cancel-tx-hs

* cancel-tx-js

* cancel-tx-js

* cancel-tx-js

* small fixes

* edit & time till submit

* edit & time till submit

* updates

* updates

* udpates

* udpates

* grumbles

* step 1

* Wonderful updates

* ready

* small refact

* small refact

* grumbles 1

* ffx2

* good ol' fashioned updates

* latest and greatest

* removeHash

* removeHash

* spec

* fix 1

* fix 1

* fix 2

* fix 2

* ff

* ff

* ff

* updates