[hooks] fix timestamp confusion in DataImportsCleanupStartupHook
CWDataImport.start_timestamp is inserted as datetime.utcnow(), in
server/sources/datafeed.py:DataFeedSourceinit_import_log.
Don't compare it to datetime.now().
[MESSAGES CONTROL]
disable-msg = C0301
[VARIABLES]
# Enable / disable this checker
enable-variables = yes
additional-builtins = _, display_name
[BASIC]
required-attributes=
attr-rgx = (w|[a-z_][a-z0-9_]{2,30})
variable-rgx = (w|[a-z_][a-z0-9_]{2,30})$
argument-rgx = (w|[a-z_][a-z0-9_]{2,30})$
[TYPECHECK]
generated-members=debug,info,notice,warning,error,critical,exception