Remove triage-as libraries from flashbuilder lib folder

It seems better to not include the auto generated triage-as libraries into the source repository to avoid confusion with the latest version in the maven repository. These files are only needed for flashbuilder. Developers that want to add these libraries for flashbuilder should add them manually.
Add /lib/triage-as*.swc to .gitignore

These files are only used by flashbuilder. The maven build will pull them out from the maven repository instead.
It seems better not to include these files in the source repository to avoid confusion with the lates libraries in the maven repository.
Developers that would like to include these files in the flashbuilder lib folder should do that manually.