ext4: remove useless condition in if statement.
ext4: remove useless condition in if statement.

In this if statement, the previous condition is useless, the later one
has covered it.

Signed-off-by: Weiyuan <9f6305d49332ab0020c44465542409253783fd05@huawei.com>
Signed-off-by: Theodore Ts'o <4ed386e0495d3e109932df055831d9ec2f824927@mit.edu>
Reviewed-by: Lukas Czerner <6c9141d0e2318b390a8a6bf8ecd9f819d16f05b4@redhat.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs