Remove the notice on the availibity of sources

README.md

@@ -26,15 +26,6 @@ When available, the sources are also included.
 - homepage: [https://github.com/apehex/feedblocks][github-feedblocks]
 - version: 1.0.0
 
-The transaction data is available for all records, in particular creation and runtime bytecodes are filled.
-
-But the source code cannot be collected via standard RPC nodes, they have to be obtained through the APIs of block explorers.
-These have a small rate limit and it takes a long time.
-
-So the source code data has only been scraped for a portion of the records, as listed in the tables below.
-
-This data was collected by the [scripts of a dedicated package, feedblocks][github-feedblocks].
-
 ### HEX Dataset
 
 | Config            | Split     | Size      | Samples   | Blocks                    |