volume_id: disable detection routines which are not setting label and uuid anyway

function                                             old     new   delta
static.warn                                            1       -      -1
static.drive_name_string                              14      12      -2
static.offsets                                         8       -      -8
static.sectors                                        10       -     -10
fs2                                                   60      48     -12
raid2                                                 16       -     -16
uuidcache_init                                       704     677     -27
raid1                                                 32       -     -32
volume_id_probe_all                                  198     158     -40
volume_id_probe_lvm1                                  58       -     -58
volume_id_probe_highpoint_37x_raid                    63       -     -63
volume_id_probe_hpfs                                  67       -     -67
volume_id_probe_minix                                 74       -     -74
volume_id_probe_lvm2                                  78       -     -78
volume_id_probe_silicon_medley_raid                   97       -     -97
volume_id_probe_via_raid                             101       -    -101
volume_id_probe_highpoint_45x_raid                   104       -    -104
volume_id_probe_nvidia_raid                          108       -    -108
volume_id_probe_lsi_mega_raid                        108       -    -108
volume_id_probe_intel_software_raid                  108       -    -108
volume_id_probe_ufs                                  126       -    -126
volume_id_probe_promise_fasttrack_raid               144       -    -144
------------------------------------------------------------------------------
(add/remove: 0/18 grow/shrink: 0/4 up/down: 0/-1384)        Total: -1384 bytes
   text    data     bss     dec     hex filename
 794244     662    7420  802326   c3e16 busybox_old
 792698     662    7420  800780   c380c busybox_unstripped

diff --git a/util-linux/volume_id/Kbuild b/util-linux/volume_id/Kbuild
index 96cd880..54b95f0 100644
--- a/util-linux/volume_id/Kbuild
+++ b/util-linux/volume_id/Kbuild
@@ -13,30 +13,29 @@
 lib-$(CONFIG_FEATURE_VOLUMEID_EXT)              += ext.o
 lib-$(CONFIG_FEATURE_VOLUMEID_FAT)              += fat.o
 lib-$(CONFIG_FEATURE_VOLUMEID_HFS)              += hfs.o
-lib-$(CONFIG_FEATURE_VOLUMEID_HIGHPOINTRAID)    += highpoint.o
-lib-$(CONFIG_FEATURE_VOLUMEID_ISWRAID)          += isw_raid.o
-lib-$(CONFIG_FEATURE_VOLUMEID_LSIRAID)          += lsi_raid.o
-lib-$(CONFIG_FEATURE_VOLUMEID_VIARAID)          += via_raid.o
-lib-$(CONFIG_FEATURE_VOLUMEID_SILICONRAID)      += silicon_raid.o
-lib-$(CONFIG_FEATURE_VOLUMEID_NVIDIARAID)       += nvidia_raid.o
-lib-$(CONFIG_FEATURE_VOLUMEID_PROMISERAID)      += promise_raid.o
+### lib-$(CONFIG_FEATURE_VOLUMEID_HIGHPOINTRAID)    += highpoint.o
+### lib-$(CONFIG_FEATURE_VOLUMEID_ISWRAID)          += isw_raid.o
+### lib-$(CONFIG_FEATURE_VOLUMEID_LSIRAID)          += lsi_raid.o
+### lib-$(CONFIG_FEATURE_VOLUMEID_VIARAID)          += via_raid.o
+### lib-$(CONFIG_FEATURE_VOLUMEID_SILICONRAID)      += silicon_raid.o
+### lib-$(CONFIG_FEATURE_VOLUMEID_NVIDIARAID)       += nvidia_raid.o
+### lib-$(CONFIG_FEATURE_VOLUMEID_PROMISERAID)      += promise_raid.o
 lib-$(CONFIG_FEATURE_VOLUMEID_ISO9660)          += iso9660.o
 lib-$(CONFIG_FEATURE_VOLUMEID_JFS)              += jfs.o
 lib-$(CONFIG_FEATURE_VOLUMEID_LINUXRAID)        += linux_raid.o
 lib-$(CONFIG_FEATURE_VOLUMEID_LINUXSWAP)        += linux_swap.o
-lib-$(CONFIG_FEATURE_VOLUMEID_LVM)              += lvm.o
-### unused
+### lib-$(CONFIG_FEATURE_VOLUMEID_LVM)              += lvm.o
 ### lib-$(CONFIG_FEATURE_VOLUMEID_MAC)              += mac.o
 ### lib-$(CONFIG_FEATURE_VOLUMEID_MSDOS)            += msdos.o
 lib-$(CONFIG_FEATURE_VOLUMEID_NTFS)             += ntfs.o
 lib-$(CONFIG_FEATURE_VOLUMEID_REISERFS)         += reiserfs.o
 lib-$(CONFIG_FEATURE_VOLUMEID_UDF)              += udf.o
-lib-$(CONFIG_FEATURE_VOLUMEID_UFS)              += ufs.o
+### lib-$(CONFIG_FEATURE_VOLUMEID_UFS)              += ufs.o
 lib-$(CONFIG_FEATURE_VOLUMEID_XFS)              += xfs.o
 lib-$(CONFIG_FEATURE_VOLUMEID_CRAMFS)           += cramfs.o
-lib-$(CONFIG_FEATURE_VOLUMEID_HPFS)             += hpfs.o
+### lib-$(CONFIG_FEATURE_VOLUMEID_HPFS)             += hpfs.o
 lib-$(CONFIG_FEATURE_VOLUMEID_ROMFS)            += romfs.o
 lib-$(CONFIG_FEATURE_VOLUMEID_SYSV)             += sysv.o
-lib-$(CONFIG_FEATURE_VOLUMEID_MINIX)            += minix.o
+### lib-$(CONFIG_FEATURE_VOLUMEID_MINIX)            += minix.o
 lib-$(CONFIG_FEATURE_VOLUMEID_LUKS)             += luks.o
 lib-$(CONFIG_FEATURE_VOLUMEID_OCFS2)            += ocfs2.o