remove useless uuid and label handling

When we intall kdump.conf to initramfs we have converted the UUID and LABEL
to device name. So in initramfs these convert code is not used indeed.

Signed-off-by: Dave Young <dyoung@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>

dracut-kdump.sh

@@ -66,24 +66,9 @@ get_mp()
     echo "$_mp"
 }
 
-to_dev_name()
-{
-    local dev="$1"
-
-    case "$dev" in
-    UUID=*)
-        dev=`blkid -U "${dev#UUID=}"`
-        ;;
-    LABEL=*)
-        dev=`blkid -L "${dev#LABEL=}"`
-        ;;
-    esac
-    echo $dev
-}
-
 dump_fs()
 {
-    local _dev=`to_dev_name $1`
+    local _dev=$1
     local _mp=`get_mp $_dev`
 
     if [ -z "$_mp" ]; then