Revert "Changes to include OTRS support (tested with v3.3.7)"

This reverts commit 7926c2c52bf19da0b8008ad4327d12339488972d.
Revert "Changes to include OTRS support (tested with v3.3.7)"

This reverts commit dcdecb368b6b251db423bb4a69ff8a951acf1010.
Removed otrs.js