Are there any coins which are deleted as the time passes so as to decrease the supply and increase its value.
Also i would like to know about coins which have less circulation supply than btc and are less in value.
There are some Altcoin company that they're burning their coin supply even I don't know how they do it but there are some Altcoin supply that needs to be decrease with some of their personal reasons.
One of Crypto that I owned is Oyster Pearl PRL and last few days the announced that they're going to burn 10 million coins this coming first week of March.
But nobody were worried because as the dev said - it will do help surge the PRL price as the total supply will decrease.
At some point it's ok as long as our coins will stay the same except the price.
They said that the PRL price will be increased as well.