procfs: Remove unnecessary cleanup on proc_create failure

[keytouch]

I found it unneccesary to call proc_remove or remove_proc_entry when proc_create returns NULL.
I searched through kernel and found existing code never call remove on failed creates.
I read the kernel source of drivers/input/input.c

[linD026]

Hi,
After I roughly look into the proc_create and proc_remove, I think proc_remove is unnecessary. (Even though, I found a use case in here)

Thanks for the PR.

[keytouch]

@linD026 Yes, this use case in the link cleans up proc entries successfully created before the failed one.
And it seems rather smart this way.

[linD026]

Ah, I see.
My bad. Sorry for annoying you about this.