Update test cases after run with --check-testcases

mysql-test/r/limit.result:
  Add missing drop of table t1
mysql-test/r/lowercase_fs_off.result:
  Add missing drop of "sample" user
mysql-test/t/limit.test:
  Add missing drop of table t1
mysql-test/t/lowercase_fs_off.test:
  Add missing drop of "sample" user

mysql-test/r/limit.result

@@ -90,3 +90,4 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 select sum(a) c FROM t1 WHERE a > 0 ORDER BY c LIMIT 3;
 c
 28
+drop table t1;

mysql-test/r/lowercase_fs_off.result

@@ -8,4 +8,5 @@ create database d2;
 ERROR 42000: Access denied for user 'sample'@'localhost' to database 'd2'
 create database D1;
 ERROR 42000: Access denied for user 'sample'@'localhost' to database 'D1'
+drop user 'sample'@'localhost';
 drop database if exists d1;

mysql-test/t/limit.test

@@ -69,5 +69,5 @@ explain select count(*) c FROM t1 WHERE a > 0 ORDER BY c LIMIT 3;
 select count(*) c FROM t1 WHERE a > 0 ORDER BY c LIMIT 3;
 explain select sum(a) c FROM t1 WHERE a > 0 ORDER BY c LIMIT 3;
 select sum(a) c FROM t1 WHERE a > 0 ORDER BY c LIMIT 3;
-
+drop table t1;
 # End of 4.1 tests

mysql-test/t/lowercase_fs_off.test

@@ -21,6 +21,7 @@ create database D1;
 disconnect sample;
 
 connection master;
+drop user 'sample'@'localhost';
 drop database if exists d1;
 disconnect master;
 connection default;