btrfs-progs: drop weird indirections & dead code from send/receive

[Eric Sandeen <sandeen@redhat.com>]

cmds-recieve.c & cmds-send.c seem to have weird wrappers and
indirections, and "groups" of commands which have only
one member, which are never referenced in the code.

I think these can be removed.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
---

 cmds-receive.c |   19 +------------------
 cmds-send.c    |   12 +-----------
 commands.h     |    2 --
 3 files changed, 2 insertions(+), 31 deletions(-)

Stefan, I'd appreciate your review & testing of this though!
TBH it's an old patch I had laying around, but I have
not re-tested it recently.

Thanks,
-Eric

diff --git a/cmds-receive.c b/cmds-receive.c
index 4e480f9..7abce76 100644
--- a/cmds-receive.c
+++ b/cmds-receive.c
@@ -907,7 +907,7 @@ out:
 	return ret;
 }
 
-static int do_cmd_receive(int argc, char **argv)
+int cmd_receive(int argc, char **argv)
 {
 	int c;
 	char *tomnt = NULL;
@@ -960,11 +960,6 @@ static int do_cmd_receive(int argc, char **argv)
 	return ret;
 }
 
-static const char * const receive_cmd_group_usage[] = {
-	"btrfs receive <command> <args>",
-	NULL
-};
-
 const char * const cmd_receive_usage[] = {
 	"btrfs receive [-ve] [-f <infile>] <mount>",
 	"Receive subvolumes from stdin.",
@@ -988,15 +983,3 @@ const char * const cmd_receive_usage[] = {
 	"                 is recognized or on EOF.",
 	NULL
 };
-
-const struct cmd_group receive_cmd_group = {
-	receive_cmd_group_usage, NULL, {
-		{ "receive", do_cmd_receive, cmd_receive_usage, NULL, 0 },
-		{ 0, 0, 0, 0, 0 },
-        },
-};
-
-int cmd_receive(int argc, char **argv)
-{
-	return do_cmd_receive(argc, argv);
-}
diff --git a/cmds-send.c b/cmds-send.c
index 7209aba..f9899f4 100644
--- a/cmds-send.c
+++ b/cmds-send.c
@@ -465,7 +465,7 @@ out:
 	return ret;
 }
 
-int cmd_send_start(int argc, char **argv)
+int cmd_send(int argc, char **argv)
 {
 	char *subvol = NULL;
 	int c;
@@ -718,11 +718,6 @@ out:
 	return ret;
 }
 
-static const char * const send_cmd_group_usage[] = {
-	"btrfs send <command> <args>",
-	NULL
-};
-
 const char * const cmd_send_usage[] = {
 	"btrfs send [-ve] [-p <parent>] [-c <clone-src>] <subvol>",
 	"Send the subvolume to stdout.",
@@ -750,8 +745,3 @@ const char * const cmd_send_usage[] = {
 	"                 use pipes.",
 	NULL
 };
-
-int cmd_send(int argc, char **argv)
-{
-	return cmd_send_start(argc, argv);
-}
diff --git a/commands.h b/commands.h
index 65829f4..3f12fab 100644
--- a/commands.h
+++ b/commands.h
@@ -85,8 +85,6 @@ extern const struct cmd_group balance_cmd_group;
 extern const struct cmd_group device_cmd_group;
 extern const struct cmd_group scrub_cmd_group;
 extern const struct cmd_group inspect_cmd_group;
-extern const struct cmd_group send_cmd_group;
-extern const struct cmd_group receive_cmd_group;
 extern const struct cmd_group quota_cmd_group;
 extern const struct cmd_group qgroup_cmd_group;
 extern const struct cmd_group replace_cmd_group;