ocfs2: clean up some unnecessary code

ocfs2: clean up some unnecessary code

Several functions have some unnecessary code, clean up these code.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Yan Wang <[email protected]>
Reviewed-by: Jun Piao <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Mark Fasheh <[email protected]>
Cc: Joel Becker <[email protected]>
Cc: Junxiao Bi <[email protected]>
Cc: Joseph Qi <[email protected]>
Cc: Changwei Ge <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>