atm: idt77252: Use sb_pool_remove()

Replacing the manual pool remove with the dedicated function.  This is
safer and more consistent with the rest of the code[1].

[1]; https://lore.kernel.org/all/20250625094013.GL1562@horms.kernel.org/

Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Link: https://patch.msgid.link/20260105212916.26678-2-fourier.thomas@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
1 file changed