greenhills: fix the pointless compare warning

CC:  modlib/modlib_depend.c "modlib/modlib_bind.c", line 741: warning #186-D: pointless comparison of
          unsigned integer with zero
            if (rel->r_offset < 0)
                              ^

Signed-off-by: guoshichao <[email protected]>

Author: extinguish

libs/libc/modlib/modlib_bind.c

@@ -731,25 +731,13 @@ static int modlib_relocatedyn(FAR struct module_s *modp,
                 }
             }
 
-          /* Calculate the relocation address. */
-
-          if (rel->r_offset < 0)
-            {
-              berr("ERROR: Section %d reloc %d:"
-                   "Relocation address out of range, offset %u\n",
-                   relidx, i, (int)rel->r_offset);
-              ret = -EINVAL;
-              lib_free(sym);
-              lib_free(rels);
-              lib_free(dyn);
-              return ret;
-            }
-
           /* Now perform the architecture-specific relocation */
 
           if ((idx_sym = ELF_R_SYM(rel->r_info)) != 0)
             {
-              if (sym[idx_sym].st_shndx == SHN_UNDEF) /* We have an external reference */
+              /* We have an external reference */
+
+              if (sym[idx_sym].st_shndx == SHN_UNDEF)
                 {
                     FAR void *ep;