Reduce the log level in 035_standby_logical_decoding.pl.

Reduce the log level in 035_standby_logical_decoding.pl as the test
doesn't require the higher log level. This helps to shrink the output size
and speed up the test a bit.

Author: Bertrand Drouvot
Discussion: https://postgr.es/m/2fefa454-5a70-2174-ddbf-4a0e41537139@gmail.com
Discussion: https://postgr.es/m/523315.1681245505@sss.pgh.pa.us

src/test/recovery/t/035_standby_logical_decoding.pl

@@ -235,8 +235,6 @@ $node_primary->append_conf('postgresql.conf', q{
 wal_level = 'logical'
 max_replication_slots = 4
 max_wal_senders = 4
-log_min_messages = 'debug2'
-log_error_verbosity = verbose
 });
 $node_primary->dump_info;
 $node_primary->start;