You can go for voluntary liquidation of the company under Insolvency and Bankruptcy Code (IBC) by following the legal process. As you don't have any immoveable properties, the voluntary liquidation will be comparatively simple, though it takes about 1 year. Getting struck off by the RoC arises if you are not complying with the compliance requirements, which may still attract penalties.
As the deposit represents accumulated profits on sale of land, the distribution to the shareholders can be by way of dividends, which becomes taxable. However, if the same is received on liquidation, the proceeds may not be taxable, depending upon the facts of the case.
Selling the company to an interested buyer is the best option you can explore as you may not need to undergo lengthy and complicated compliance related issues. It will also help you to realise the value of your shares.
In the case of voluntary liquidation under IBC, you need the services of a company secretary/chartered accountant, an insolvency professional, a Registered valuer and perhaps a legal counsel for representation before the NCLT. The cost may approximately be Rs 10 Lakhs.