ASoC: codecs: wcd939x: Drop unused num_ports field

The driver does not use few 'num_ports' in 'struct wcd939x_sdw_priv'.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://msgid.link/r/20240612-asoc-wcd9xxx-wide-cleanups-v1-23-0d15885b2a06@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wcd939x.h

@@ -912,7 +912,6 @@ struct wcd939x_sdw_priv {
 	const struct wcd939x_sdw_ch_info *ch_info;
 	bool port_enable[WCD939X_MAX_SWR_CH_IDS];
 	int active_ports;
-	int num_ports;
 	bool is_tx;
 	struct wcd939x_priv *wcd939x;
 	struct irq_domain *slave_irq;