By default IPv6 came with the package in Solairs 8. And it functionalities are wide. Ex:

- Expanded Routing and Addressing: IPv6 increases the IP address size from 32 bits to 128 bits to support increased levels of addressing hierarchy, provide a far greater number of addressable nodes, and allow auto-configuration of addresses. Of the 128 bits, 48 bits are reserved for public topology, 16 bits to design a site topology, and 64 bits to identify a machine in a subnet. This provides support for 65K subnets with a virtually infinite number of hosts per subnet.

- IP Security: IPv6 is a better platform for implementing security through IPSec because IPv6 restores end-to-end IP connectivity. This security functionality was lost due to the introduction of NAT (Network Address Translator) boxes.

Cant figure out why you want to remove/uninstall it. I give two opinions above so that maybe you will change your mind not to uninstall.