qcacmn: Remove qdf_flex_mem_release()

Due to a limitation in the memory leak detection logic when qdf_flex_mem
was written, qdf_flex_mem_release() was necessary to free any
dynamically allocated memory in the qdf_flex_mem_pool during certain
points in the WLAN driver lifecycle. This was done to avoid flagging any
dynamically allocated qdf_flex_mem_segments as false positive leaks
when the memory domains were changed and leak checking was performed.
With the introduction of qdf_talloc(), this workaround is no longer
required. Replace the calls to qdf_mem_malloc/free with qdf_talloc/free,
and remove qdf_flex_mem_release() altogether.

Change-Id: Ia5fd21386b94fc117af5f27853db5d8341601738
CRs-Fixed: 2404955

scheduler/src/scheduler_core.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -455,7 +455,5 @@ void scheduler_queues_flush(struct scheduler_ctx *sched_ctx)
 		mq = &sched_ctx->queue_ctx.sch_msg_q[i];
 		scheduler_flush_single_queue(mq);
 	}
-
-	qdf_flex_mem_release(&sched_pool);
 }