Commented out old odd-parity lfs_crc table

We've been linking in this now-unused CRC table when we don't
need to be:

           code          stack
  before: 33976           2824
  after:  33856 (-0.4%)   2824 (+0.0%)

The only catch was it's use in lfs_emubd to provide optional checksums
when debugging. But the actual checksum doesn't matter, so this can be
migrated to crc32c.

lfs_util.h

@@ -359,8 +359,8 @@ ssize_t lfs_fromleb128(uint32_t *word, const void *buffer, size_t size);
 
 
 
-// Calculate CRC-32 with polynomial = 0x04c11db7
-uint32_t lfs_crc(uint32_t crc, const void *buffer, size_t size);
+//// Calculate CRC-32 with polynomial = 0x04c11db7
+//uint32_t lfs_crc(uint32_t crc, const void *buffer, size_t size);
 
 // Calculate crc32c incrementally
 //