size_trunc_len() generates incorrect result in some cases.

Revert "(size_trunc_len): support automatic maximum unit for specified size."
This reverts commit ef94b84eaf570dd1cc3faa383cdb49a7638c3be6.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

lib/util.c

@@ -407,7 +407,6 @@ size_trunc_sep (uintmax_t size, gboolean use_si)
  *
  * Units: size units (filesystem sizes are 1K blocks)
  *    0=bytes, 1=Kbytes, 2=Mbytes, etc.
- *    -1 means maximum possible unit for specified size
  */
 
 void
@@ -464,16 +463,6 @@ size_trunc_len (char *buffer, unsigned int len, uintmax_t size, int units, gbool
         len = 9;
 #endif
 
-    /* find maximum unit */
-    if (units < 0)
-    {
-        const unsigned int divider = use_si ? 1000 : 1024;
-        uintmax_t size_remain = size;
-
-        for (units = 0; size_remain >= divider; units++)
-            size_remain /= divider;
-    }
-
     /*
      * recalculate from 1024 base to 1000 base if units>0
      * We can't just multiply by 1024 - that might cause overflow