gpcheckcat: Remove outdated constraint checks
gpcheckcat: Remove outdated constraint checks

This commit is part of Add Partitioned Indexes #7047.

Remove 'fix_ill_named_constraint' query from 'part_constraint' test.
This query expects all UNIQUE and PRIMARY KEY constraints on partitioned
tables to have identical names. This is no longer true after enforcing
UNIQUE and PRIMARY KEY constraints to have the same name as the
underlying index. These tests will need to be replaced with ones that
validate the integrity of the pg_depend entries for partitioned indexes
and constraints.

Co-authored-by: Kalen Krempely <9e21ad9b1cb949be1035df9e3f38e74e41b67a0b@pivotal.io>

ashwinstar/gpdb,greenplum-db/gpdb,lisakowen/gpdb,xinzweb/gpdb,xinzweb/gpdb,50wu/gpdb,adam8157/gpdb,greenplum-db/gpdb,lisakowen/gpdb,ashwinstar/gpdb,xinzweb/gpdb,jmcatamney/gpdb,xinzweb/gpdb,lisakowen/gpdb,ashwinstar/gpdb,lisakowen/gpdb,adam8157/gpdb,jmcatamney/gpdb,50wu/gpdb,adam8157/gpdb,xinzweb/gpdb,50wu/gpdb,ashwinstar/gpdb,adam8157/gpdb,50wu/gpdb,xinzweb/gpdb,lisakowen/gpdb,greenplum-db/gpdb,adam8157/gpdb,jmcatamney/gpdb,greenplum-db/gpdb,lisakowen/gpdb,50wu/gpdb,lisakowen/gpdb,lisakowen/gpdb,xinzweb/gpdb,jmcatamney/gpdb,50wu/gpdb,jmcatamney/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,adam8157/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,adam8157/gpdb,adam8157/gpdb,50wu/gpdb,jmcatamney/gpdb,greenplum-db/gpdb,50wu/gpdb,greenplum-db/gpdb,xinzweb/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,greenplum-db/gpdb