Re-remove keystore and user

keyStore/action.go

keyStore/action_test.go

keyStore/e2eKey.go

keyStore/e2eKey_test.go

keyStore/keyManager.go

keyStore/keyManager_test.go

keyStore/keyParams.go

keyStore/keyStack.go

keyStore/keyStack_test.go

keyStore/keyStore.go

keyStore/keyStore_test.go

keyStore/recieveKeyManagerBuffer.go

keyStore/recieveKeyManagerBuffer_test.go

keyStore/rekeyManager.go

keyStore/rekeyManager_test.go

storage/e2e/manager.go

user/regCode.go

user/regState.go

user/session.go

user/sessionVersion.go