message: Remove outdated compatibility list
diff: @@ -15,13 +15,6 @@ This repo provides a useful functionality to build smart contracts that are
  compatible with a Cosmos SDK based runtime,
  [wasmd](https://github.com/CosmWasm/wasmd).
  -Compatibility:
  -
  -- Contracts built with CosmWasm `v0.8.x` (unreleased) will run on wasmd `v0.8.x`
  - (unreleased) (master branch)
  -- Contracts built with CosmWasm `v0.7.x` will run on wasmd `v0.7.x` (0.7 branch)
  -- Contracts built with CosmWasm `v0.6.3+` will run on wasmd `v0.6.x`
  -
  ## Overview
  To get that contract to interact with a system needs many moving parts. To get
  