removed old js yet again

cmd/mist/assets/ext/LICENSE

cmd/mist/assets/ext/README.md

cmd/mist/assets/ext/big.js

cmd/mist/assets/ext/bower.json

cmd/mist/assets/ext/dist/ethereum.js

cmd/mist/assets/ext/dist/ethereum.js.map

cmd/mist/assets/ext/dist/ethereum.min.js

cmd/mist/assets/ext/example/balance.html

cmd/mist/assets/ext/example/contract.html

cmd/mist/assets/ext/example/natspec_contract.html

cmd/mist/assets/ext/example/node-app.js

cmd/mist/assets/ext/filter.js

cmd/mist/assets/ext/gulpfile.js

cmd/mist/assets/ext/home.html

cmd/mist/assets/ext/html_messaging.js

cmd/mist/assets/ext/http.js

cmd/mist/assets/ext/index.js

cmd/mist/assets/ext/lib/abi.js

cmd/mist/assets/ext/lib/contract.js

cmd/mist/assets/ext/lib/filter.js