Remove the debug.sizeof CLI hack.

Instead one can start gdb on the compiled binary and ask it:

	print sizeof(struct sess)
	$1 = 192

bin/varnishd/cache/cache_panic.c

@@ -35,14 +35,11 @@
 #include <execinfo.h>
 #endif
 
-#include <stddef.h>			// offsetof()
 #include <stdlib.h>
 #include <signal.h>
 
 #include "cache.h"
 #include "cache_filter.h"
-#include "hash/hash_slinger.h"		// struct objhead
-#include "vend.h"
 #include "common/heritage.h"
 
 #include "cache_backend.h"
@@ -50,7 +47,6 @@
 #include "vcl.h"
 #include "vcli_priv.h"
 #include "waiter/waiter.h"
-#include "vsa.h"
 
 /*
  * The panic string is constructed in memory, then copied to the
@@ -576,74 +572,6 @@ pan_ic(const char *func, const char *file, int line, const char *cond,
 
 /*--------------------------------------------------------------------*/
 
-static void __match_proto__(cli_func_t)
-cli_debug_sizeof(struct cli *cli, const char * const *av, void *priv)
-{
-	(void)av;
-	AZ(priv);
-
-#define SZOF(foo)       VCLI_Out(cli, \
-    "sizeof(%s) = %zd = 0x%zx\n", #foo, sizeof(foo), sizeof(foo))
-	SZOF(struct ws);
-	SZOF(struct http);
-	SZOF(struct http_conn);
-	SZOF(struct acct_req);
-	SZOF(struct worker);
-	SZOF(struct storage);
-	SZOF(struct busyobj);
-	SZOF(struct object);
-	SZOF(struct objcore);
-	SZOF(struct objhead);
-	SZOF(struct sess);
-	SZOF(struct req);
-	SZOF(struct vbc);
-	SZOF(struct VSC_C_main);
-	SZOF(struct lock);
-	SZOF(struct dstat);
-	VCLI_Out(cli, "sizeof(struct suckaddr) = %d = 0x%x\n",
-	    vsa_suckaddr_len, vsa_suckaddr_len);
-#if 0
-#define OFOF(foo, bar)	{ foo __foo; VCLI_Out(cli, \
-    "%-30s = 0x%4zx @ 0x%4zx\n", \
-	#foo "." #bar, sizeof(__foo.bar), offsetof(foo, bar)); }
-#if 0
-	OFOF(struct objhead, magic);
-	OFOF(struct objhead, refcnt);
-	OFOF(struct objhead, mtx);
-	OFOF(struct objhead, objcs);
-	OFOF(struct objhead, digest);
-	OFOF(struct objhead, waitinglist);
-	OFOF(struct objhead, _u);
-#endif
-#if 0
-	OFOF(struct http, magic);
-	OFOF(struct http, logtag);
-	OFOF(struct http, ws);
-	OFOF(struct http, hd);
-	OFOF(struct http, hdf);
-	OFOF(struct http, shd);
-	OFOF(struct http, nhd);
-	OFOF(struct http, status);
-	OFOF(struct http, protover);
-	OFOF(struct http, conds);
-#endif
-#if 0
-	OFOF(struct storage, magic);
-	OFOF(struct storage, fd);
-	OFOF(struct storage, where);
-	OFOF(struct storage, list);
-	OFOF(struct storage, stevedore);
-	OFOF(struct storage, priv);
-	OFOF(struct storage, ptr);
-	OFOF(struct storage, len);
-	OFOF(struct storage, space);
-#endif
-#undef OFOF
-#endif
-}
-
-/*--------------------------------------------------------------------*/
-
 static void __match_proto__(cli_func_t)
 ccf_panic(struct cli *cli, const char * const *av, void *priv)
 {
@@ -657,9 +585,6 @@ ccf_panic(struct cli *cli, const char * const *av, void *priv)
 /*--------------------------------------------------------------------*/
 
 static struct cli_proto debug_cmds[] = {
-	{ "debug.sizeof", "debug.sizeof",
-		"\tDump sizeof various data structures.",
-		0, 0, "d", cli_debug_sizeof },
 	{ "debug.panic.worker", "debug.panic.worker",
 		"\tPanic the worker process.",
 		0, 0, "d", ccf_panic },