Revert "Wrapped dispose method in try/catch block"
Revert "Wrapped dispose method in try/catch block"

This reverts commit 1950a6972d1a3eec8b3ad60da9dcef9c9e3dc252.

Change-Id: Idf0449f91dd3f053ea43de8d0084002e68a8f8c0

Kurento/kurento-utils-js,Kurento/kurento-utils-js,Kurento/kurento-utils-js