PyAthenaTests: delete unused package

None of the files in this package are used anywhere, has not seen relevant updates in years and despite its name it does not define any unit tests.

This merge request affects 1 package:

• AtlasTest/PyAthenaTests

This merge request affects 37 files. Since this is a long list, it will not be printed.

added Tau Test Trigger master review-pending-level-1 labels

CI Result SUCCESS (hash 67d568cd)

	Athena	AthSimulation	AthGeneration	AnalysisBase	AthAnalysis	DetCommon
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
AthAnalysis: number of compilation errors 0, warnings 0
DetCommon: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 34873]

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

merged

mentioned in commit a99b81eb

added sweep:ignore label