clean up at end of test (thanks serg)

mysql-test/r/rpl_set_charset.result:
  result update
mysql-test/t/rpl_set_charset.test:
  clean up on slave too.

mysql-test/r/rpl_set_charset.result

@@ -48,5 +48,4 @@ C0C1C2C3C4C5C6C7C8C9CACBCCCDCECF	C0
 D0D1D2D3D4D5D6D7D8D9DADBDCDDDEDF	D0
 E0E1E2E3E4E5E6E7E8E9EAEBECEDEEEF	E0
 F0F1F2F3F4F5F6F7F8F9FAFBFCFDFEFF	F0
-drop table t1;
 drop database mysqltest1;

mysql-test/t/rpl_set_charset.test

@@ -34,9 +34,7 @@ use mysqltest1;
 select "--- on slave ---";
 select hex(a),b from t1 order by b;
 connection master;
-drop table t1;
+drop database mysqltest1;
 save_master_pos;
 connection slave;
 sync_with_master;
-connection master;
-drop database mysqltest1;