t7004: don't create unused file

msgfile2 became unused with 3968658 (Make builtin-tag.c use
parse_options., 2007-11-09), get rid of it.

Signed-off-by: René Scharfe <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: rscharfe

t/t7004-tag.sh

@@ -517,7 +517,6 @@ test_expect_success \
 test_expect_success \
 	'trying to create tags giving both -m or -F options should fail' '
 	echo "message file 1" >msgfile1 &&
-	echo "message file 2" >msgfile2 &&
 	! tag_exists msgtag &&
 	test_must_fail git tag -m "message 1" -F msgfile1 msgtag &&
 	! tag_exists msgtag &&