ASoC: q6dsp: q6afe: remove unneeded dead-store initialization

Variables 'wait' and 'port_id' are being initialized, however the
values are never read and updated later on, hence the redundant
initializations can be removed.

Cleans up clang warnings:
sound/soc/qcom/qdsp6/q6afe.c:933:21: warning: Value stored to 'wait'
during its initialization is never read
sound/soc/qcom/qdsp6/q6afe.c:1186:6: warning: Value stored to 'port_id'
during its initialization is never read

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/1619345553-29781-1-git-send-email-yang.lee@linux.alibaba.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/qcom/qdsp6/q6afe.c

@@ -1183,7 +1183,7 @@ int q6afe_port_stop(struct q6afe_port *port)
 	struct afe_port_cmd_device_stop *stop;
 	struct q6afe *afe = port->afe;
 	struct apr_pkt *pkt;
-	int port_id = port->id;
+	int port_id;
 	int ret = 0;
 	int index, pkt_size;
 	void *p;