Remove obsolete test

mysql-test/r/user_var.result:
  Update results
mysql-test/t/user_var.test:
  Remove unnecessary test

mysql-test/r/user_var.result

@@ -215,9 +215,6 @@ select @@version;
 select @@global.version;
 @@global.version
 #
-select @@session.VERSION;
-@@session.VERSION
-#
 set @first_var= NULL;
 create table t1 select @first_var;
 show create table t1;

mysql-test/t/user_var.test

@@ -143,8 +143,6 @@ select @@Max_Allowed_Packet;
 select @@version;
 --replace_column 1 #
 select @@global.version;
---replace_column 1 #
-select @@session.VERSION;
 
 # End of 4.1 tests