code cleanup

cmd/mytoken-server/mytoken-migratedb/main.go

cmd/mytoken-server/mytoken-migratedb/version.go

cmd/mytoken-server/mytoken-setup/setup.go

internal/db/cluster/cluster.go

internal/db/dbmigrate/migrate.go

internal/db/dbrepo/accesstokenrepo/accessToken.go

internal/db/dbrepo/accesstokenrepo/attribute.go

internal/db/dbrepo/authcodeinforepo/authcodeInfo.go

internal/db/dbrepo/cryptstore/cryptstore.go

internal/db/dbrepo/encryptionkeyrepo/encryptionkeyRepo.go

internal/db/dbrepo/eventrepo/event.go

internal/db/dbrepo/eventrepo/eventHistory.go

internal/db/dbrepo/mytokenrepo/mytoken.go

internal/db/dbrepo/mytokenrepo/mytoken_test.go

internal/db/dbrepo/mytokenrepo/mytokenrepohelper/helpers.go

...b/dbrepo/mytokenrepo/transfercoderepo/pollingCodeTmpMT.go

...rnal/db/dbrepo/mytokenrepo/transfercoderepo/proxytoken.go

internal/db/dbrepo/mytokenrepo/tree/tree.go

internal/db/dbrepo/refreshtokenrepo/refreshtoken.go

internal/db/dbrepo/versionrepo/versionrepo.go