Remove last traces of AthAnalysisSequencer

I noticed that I'd left AthAnalysisSequencer defined in AthenaCommon, while it was removed in a commit last year (7573ec3b).

Jenkins please retry a build

This merge request affects 1 package:

• Control/AthenaCommon

Adding @ssnyder ,@rbianchi as watchers

added Core master review-pending-level-1 labels

CI Result SUCCESS

	Athena	AthSimulation
externals
cmake
make
required tests
optional tests

Full details available at NICOS MR-20710-2019-01-29-12-40
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
CI Jenkins server is switched to https://atlas-sit-ci.cern.ch. It is accessible world-wide (behind CERN SSO). In old links to Jenkins server aibuild080.cern.ch:8080 should be replaced with atlas-sit-ci.cern.ch For experts only: Jenkins output [CI-MERGE-REQUEST 32933]

added review-approved label and removed review-pending-level-1 label

Approving.

Cheers, Johannes (lvl1)

mentioned in commit a6de9f2c

merged

added sweep:ignore label