scheduler: remove Makefile since deployment is automated in infradata/gae.
scheduler: remove Makefile since deployment is automated in infradata/gae.

R=vadimsh

Change-Id: I2bb6a94bb6f479962049372166caa1cee482ebb3
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/2158366
Reviewed-by: Vadim Shtayura <9f116ddb1b24f6fc1916a676eb17161b6c07dfc1@chromium.org>
Commit-Queue: Vadim Shtayura <9f116ddb1b24f6fc1916a676eb17161b6c07dfc1@chromium.org>
Auto-Submit: Andrii Shyshkalov <a30c74fa30536fe7ea81ed6dec202e35e149e1fd@google.com>

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