#removeFrom:to: changes caused AmberCli to mishandle arguments

On  `grunt amberc:amber_cli` then `node cli\js\amber-cli.js serve` to not run the server. 
This a fix for one part of pull requiest [#622](https://github.com/amber-smalltalk/amber/pull/622) based on current master. I will leave the updating of cli/index.html to [#632](https://github.com/amber-smalltalk/amber/issues/632).  #622 can be closed if this pull request is accepted.

Details of the problems:
Correction of method #removeFrom:to: which is used in cli/AmberCli.st causes argument handling logic to remove the cli command which for the server is serve. See pull requiest [#622](https://github.com/amber-smalltalk/amber/pull/622) for what Herby and I did two days ago.