[LSM] Remove slash query admin gate

[sampocs]

Closes: #XXX

Context and purpose of the change

No reason to have the slash query admin-gated

Brief Changelog

• Removed admin address check in validate basic

Testing

• Start up network
• Confirm validator sharesToTokensRate is 1.0 in state.log
• Wait for delegation to land by checking state.log
• Slash the validator

docker pause dockernet-gaia2-1
sleep 30
docker unpause dockernet-gaia2-1

• Process the slash with a non-admin address

stridedl tx stakeibc update-delegation GAIA cosmosvaloper17kht2x2ped6qytr2kklevtvmxpw7wq9rarvcqz --from val1 -y

• Confirm the sharesToTokensRate was update in state.log