Convert image file contiguous warning to debug level

src/ZuluSCSI_disk.cpp

@@ -769,7 +769,7 @@ bool scsiDiskOpenHDDImage(int target_idx, const char *filename, int scsi_id, int
         }
         else if (img.file.contiguousRange(&sector_begin, &sector_end))
         {
-            azlog("---- Image file is contiguous, SD card sectors ", (int)sector_begin, " to ", (int)sector_end);
+            azdbg("---- Image file is contiguous, SD card sectors ", (int)sector_begin, " to ", (int)sector_end);
         }
         else
         {