soc: fsl: qbman: remove unused struct 'cgr_comp'

'cgr_comp' has been unused since
commit 96f413f4 ("soc/fsl/qbman: fix issue in
qman_delete_cgr_safe()").

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Sean Anderson <sean.anderson@linux.dev>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240528231123.136664-1-linux@treblig.org