ext4/002: remove EXT4_EOFBLOCKS_FL test

This test exercises obsolete ext4-specific functionality that will be
removed in the kernel's 5.7 release.  Once that happens, ext4/002 will
always fail, so remove the test to avoid the noise.

Signed-off-by: Eric Whitney <enwlinux@gmail.com>
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>