[CiPostgresRunner] Don't copy pg_hba.conf

This seems to cause issues, and postgres on Travis is setup to use
`trust` instead of `peer`.  Since the tests generally work with the
default, continue using that instead of using what is brought over from
a `.restore`.

spec/ci_helper.rb

@@ -11,9 +11,6 @@ def self.start
     # Make sure we have our postgresql.conf in the right spot on Travis
     system("sudo cp #{PGDATADIR}/postgresql.conf #{PGCONFIGDIR}/postgresql.conf")
 
-    # Move our configured `pg_hba.conf` to the config dir as well
-    system("sudo cp #{PGDATADIR}/pg_hba.conf #{PGCONFIGDIR}/pg_hba.conf")
-
     # Make sure directly in the postgresql.conf, the data_directory is set
     # (requirement for pg_wrapper I think...)
     system("sudo sed -i -e \"\\$adata_directory = '#{PGDATADIR}'\" #{PGCONFIGDIR}/postgresql.conf")