Corrections to pseudi_thread_id_basic test (WL4738)

mysql-test/suite/sys_vars/r/pseudo_thread_id_basic.result

@@ -3,9 +3,6 @@ ERROR HY000: Variable 'pseudo_thread_id' is a SESSION variable
 select @@session.pseudo_thread_id between 1 and 10000;
 @@session.pseudo_thread_id between 1 and 10000
 1
-select @@session.pseudo_thread_id;
-@@session.pseudo_thread_id
-2
 should be empty
 show global variables like 'pseudo_thread_id';
 Variable_name	Value

mysql-test/suite/sys_vars/t/pseudo_thread_id_basic.test

@@ -11,7 +11,6 @@ select @@global.pseudo_thread_id;
 
 # Check the variable has a valid numeric value (assumed to be less then 10000)
 select @@session.pseudo_thread_id between 1 and 10000;
-select @@session.pseudo_thread_id;
 
 --echo should be empty
 show global variables like 'pseudo_thread_id';