uuid: drop dependency on uuid.h

The weird things distros do to the path where uuid.h gets installed
have broken bees builds for the last time.

We were only using uuid to support a legacy feature that was removed
over four years ago.

Hypothetical users who are upgrading directly from bees v0.1 should
probably restart all the crawlers anyway--there were bugs.  Also, if any
such users exist, I respect their tremendous patience with the horrible
performance all these years--bees got about 30x faster since v0.1.

Signed-off-by: Zygo Blaxell <bees@furryterror.org>

lib/fs.cc

@@ -5,7 +5,6 @@
 #include "crucible/limits.h"
 #include "crucible/ntoa.h"
 #include "crucible/string.h"
-#include "crucible/uuid.h"
 
 // FS_IOC_FIEMAP
 #include <linux/fs.h>
@@ -1071,7 +1070,6 @@ namespace crucible {
 		os << "BtrfsIoctlFsInfoArgs {"
 			<< " max_id = " << a.max_id << ","
 			<< " num_devices = " << a.num_devices << ","
-			<< " fsid = " << a.uuid() << ","
 #if 0
 			<< " nodesize = " << a.nodesize << ","
 			<< " sectorsize = " << a.sectorsize << ","
@@ -1099,12 +1097,6 @@ namespace crucible {
 		}
 	}
 
-	string
-	BtrfsIoctlFsInfoArgs::uuid() const
-	{
-		return uuid_unparse(fsid);
-	}
-
 	uint16_t
 	BtrfsIoctlFsInfoArgs::csum_type() const
 	{