cleanup README from deprecated eth2.0-tests (state test) mentions.

README.md

@@ -30,34 +30,10 @@ This repository allows use to workaround the current following limitations:
     which allows well-tested serialization and deserialization into and from Ethereum types.
   - [NimYAML](https://nimyaml.org) uses int by default for numerals and cannot deserialize
     18446744073709551615 (2^64-1), the FAR_FUTURE_SLOT constant.
-  - Eth2.0 tests currently uses an invalid BLS signature https://github.com/ethereum/eth2.0-tests/issues/27
   - All those workarounds requires an intermediate reformatted JSON file, but the tests are huge (100k+ lines)
     and will cause review issues in the main repo.
 
-Only state tests are worked on at the moment.
-
-## State tests conversion.
-
-Note on serialization hacks:
-
-### FAR_FUTURE_SLOT (18446744073709551615)
-
-The FAR_FUTURE_SLOT (18446744073709551615) has been rewritten as a string **in the YAML file**
-as it's 2^64-1 and Nim by default try to parse it into a int64 (which can represents up to 2^63-1).
-
-The YAML file is then converted to JSON for easy input to the json serialization/deserialization
-with beacon chain type support.
-
-"18446744073709551615" is then replaced again by uint64 18446744073709551615.
-
-### Compressed signature
-
-In `latest_block_header` field, the signatures and randao_reveals are
-`"0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"`
-but that is not a valid compressed BLS signature, the zero signature should be:
-`"0xc00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"`
-
-### Commands
+## Commands
 
 You can compile and run the `batch_convert.nim` file to convert the supported tests.
 It needs to be run from the root of this project directory.