EventSelectorAthenaPool: cmake cleanup

Remove `atlas_depends_on_subdirs` and update link dependencies.

Database/AthenaPOOL/EventSelectorAthenaPool/CMakeLists.txt

-################################################################################
-# Package: EventSelectorAthenaPool
-################################################################################
+# Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 
 # Declare the package name:
 atlas_subdir( EventSelectorAthenaPool )
 
-# Declare the package's dependencies:
-atlas_depends_on_subdirs( 
-                          PUBLIC
-                          PRIVATE
-                          Control/AthenaBaseComps
-                          Control/AthenaKernel
-                          Control/StoreGate
-                          Database/APR/CollectionBase
-                          Database/APR/PersistencySvc
-                          Database/AthenaPOOL/AthenaPoolCnvSvc
-                          Database/AthenaPOOL/AthenaPoolUtilities
-                          Database/AthenaPOOL/PoolSvc
-                          Database/PersistentDataModel
-                          GaudiKernel )
-
 # External dependencies:
-find_package( CORAL COMPONENTS CoralBase CoralKernel RelationalAccess )
+find_package( CORAL COMPONENTS CoralBase )
 
 # Component(s) in the package:
 atlas_add_component( EventSelectorAthenaPool
@@ -32,14 +15,13 @@ atlas_add_component( EventSelectorAthenaPool
                      src/PoolCollectionConverter.cxx
                      src/registerKeys.cxx
                      src/components/*.cxx
-                     INCLUDE_DIRS ${CORAL_INCLUDE_DIRS} 
-                     LINK_LIBRARIES ${CORAL_LIBRARIES} AthenaBaseComps AthenaKernel StoreGateLib SGtests CollectionBase PersistencySvc AthenaPoolCnvSvcLib AthenaPoolUtilities PersistentDataModel GaudiKernel )
+                     INCLUDE_DIRS ${CORAL_INCLUDE_DIRS}
+                     LINK_LIBRARIES ${CORAL_LIBRARIES} AthenaBaseComps AthenaKernel AthenaPoolCnvSvcLib AthenaPoolUtilities CollectionBase GaudiKernel PersistencySvc PersistentDataModel PoolSvcLib StoreGateLib )
 
 # Install files from the package:
-atlas_install_python_modules( python/*.py )
+atlas_install_python_modules( python/*.py POST_BUILD_CMD ${ATLAS_FLAKE8} )
 atlas_install_joboptions( share/*.py )
 
-
 atlas_add_test( CondProxyProviderConfig_test
                 SCRIPT python -m EventSelectorAthenaPool.CondProxyProviderConfig
                 LOG_SELECT_PATTERN "ComponentAccumulator|^---|^CondProxyProvider" )