libbtrfs: drop pointless assertion when reading send stream

Commit bf0f3db ("btrfs-progs: introduce UASSERT() for purely
userspace code") added UASERT to distinguish ASSERT macro from user
space code. This was wrongly added to libbtrfs/ and pulled the
common/messages.h include too.

Signed-off-by: David Sterba <dsterba@suse.com>

libbtrfs/send-stream.c

@@ -26,7 +26,6 @@
 #include "libbtrfs/send-stream.h"
 #include "libbtrfs/ctree.h"
 #include "libbtrfs/crc32c.h"
-#include "common/messages.h"
 
 struct btrfs_send_stream {
 	char read_buf[BTRFS_SEND_BUF_SIZE];
@@ -109,7 +108,6 @@ static int read_cmd(struct btrfs_send_stream *sctx)
 
 	memset(sctx->cmd_attrs, 0, sizeof(sctx->cmd_attrs));
 
-	UASSERT(sizeof(*sctx->cmd_hdr) <= sizeof(sctx->read_buf));
 	ret = read_buf(sctx, sctx->read_buf, sizeof(*sctx->cmd_hdr));
 	if (ret < 0)
 		goto out;