[milo] remove gae/server/info package from acl.go
[milo] remove gae/server/info package from acl.go

R=mwarton, nqmtuan

Bug: 1247518
Change-Id: I7a29d20d9773e84d809c798d2100b24fee34b9f9
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/3167112
Commit-Queue: Weiwei Lin <968518a24f41fef00b747498600e52b792d06ae0@google.com>
Auto-Submit: Weiwei Lin <968518a24f41fef00b747498600e52b792d06ae0@google.com>
Reviewed-by: Quang Minh Tuan Nguyen <7f5d2f4f6ce87649784e35ad551490ab8d89e8eb@google.com>

luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go