TrigValidation: Clean up obsolete files

Just removing some files which are no longer needed. Relevant Jira: ATR-20090

This merge request affects 5 packages:

• Trigger/TrigValidation/TrigAnalysisTest
• Trigger/TrigValidation/TrigP1Test
• Trigger/TrigValidation/TrigUpgradeTest
• Trigger/TrigValidation/TrigValTools
• Trigger/TrigValidation/TriggerTest

Adding @okumura ,@salderwe ,@jpanduro as watchers

added Trigger master review-pending-level-1 labels

CI Result SUCCESS (hash 62d4d254)

	Athena	AthSimulation	AnalysisBase	AthGeneration
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 7
AthSimulation: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 16719]

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

There is realy not much to comment on here. All seems fine.

merged

mentioned in commit 6eb67986

added sweep:ignore label