stmmac: Remove pcim_* functions for driver detach

stmmac: Remove pcim_* functions for driver detach

Functions prefixed with "pcim_" are managed devres functions which
perform automatic cleanup once the driver unloads. It is, thus, not
necessary to call any cleanup functions in remove() callbacks.

Remove the pcim_ cleanup function calls in the remove() callbacks.

Signed-off-by: Philipp Stanner <phasta@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Yanteng Si <si.yanteng@linux.dev>
Tested-by: Henry Chen <chenx97@aosc.io>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20250324092928.9482-5-phasta@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>