Dear Shukla,
Your query is somewhat confusing. On one hand you are saying that it was let out to a tenant and on the other hand you are saying that you have given on licence. which one is correct. Because, in law, licencee will have no rights except to vacate the premises as soon as demanded by the owner.
Anyhow, if rent is not paid, you can straight away ask the court to order eviction of tenant from the leasehold premises under Order XV A of Code of civil procedure which was inserted in the recent amendment. In spite of eviction order of the court, if the tenant fails to evict the premises, you can initiate execution proceedings, wherein, the court will appoint an officer(amin) to deliver the vacant possession by evicting the tenant at the first instance. If the tenant obstruts the court officer, then you can seek aid of police for getting the same evicted.