Revert "add frandom"

This reverts commit a08d4a7b1e12f5d737c5fc4e515356c54542adea.
Revert "abb-lincks"

This reverts commit cc8ec2c585284217af046378601beb3fe51b8fe4.
Revert "sysctrl"

This reverts commit 295474fdbe4be6eab71b26b06cebfca2856190a6.
Revert "abb_charg(test only)"

This reverts commit b4164b934252266c7017b5c00eadb219fff279f1.