Drop periodic CI tests. (#2322)
Drop periodic CI tests. (#2322)

* Drop periodic CI tests.

* Testing cancelling build.

* Disable concurrent builds.

* Remove disableConcurrentBuilds.

lolski/grakn,graknlabs/grakn,lolski/grakn,lolski/grakn,graknlabs/grakn,lolski/grakn,graknlabs/grakn,graknlabs/grakn