vcol.wrong_arena fails in fulltest

vcols in the table definition are intentionaly bad and produce
warnings when a table is opened. In some cases (depending on the
TDC/TC state as left by earlier tests) a table might be opened in the
middle of the test, resulting in spurious warnings. Suppress them.

Also, don't run main.mdev-504 for ps-protocol at all (instead of
disabling ps-protocol inside the test, but still running the test)

mysql-test/suite/vcol/r/wrong_arena.result

@@ -40,12 +40,6 @@ connection default;
 select * from t1;
 a	b	c	d	e
 2010-10-10 10:10:10	1	0	0	NULL
-Warnings:
-Warning	1292	Incorrect datetime value: '1'
-Warning	1292	Incorrect datetime value: '2'
-Warning	1292	Incorrect datetime value: '1'
-Warning	1292	Incorrect datetime value: '1'
-Warning	1292	Incorrect datetime value: '2'
 drop table t1;
 connect con1, localhost, root;
 create table t1 (a datetime,

mysql-test/suite/vcol/t/wrong_arena.test

@@ -16,11 +16,15 @@ create table t1 (a datetime,
 );
 show create table t1;
 connect con1, localhost, root;
+disable_warnings;
 insert t1 (a) values ('2010-10-10 10:10:10');
+enable_warnings;
 select * from t1;
 disconnect con1;
 connection default;
+disable_warnings;
 select * from t1;
+enable_warnings;
 drop table t1;
 
 connect con1, localhost, root;

mysql-test/t/mdev-504.test

 --source include/not_valgrind.inc
---disable_ps_protocol
+--source include/no_protocol.inc
 
 SET GLOBAL net_write_timeout = 900;