Remove EIP-7742 (#8083)

This EIP was removed and equivalent functionality replaced by EIP-7840.

---

Revert "Rename targetBlobCount to targetBlobsPerBlock (#7981)"

This reverts commit 1671306749.

Revert "EIP-7742: Add target_blob_count to block header (#7808)"

This reverts commit f855d5b72f.

Signed-off-by: Simon Dudley <simon.dudley@consensys.net>

config/src/main/java/org/hyperledger/besu/config/GenesisConfig.java

@@ -265,17 +265,6 @@ public class GenesisConfig {
         "0x0000000000000000000000000000000000000000000000000000000000000000");
   }
 
-  /**
-   * Gets target blobs per block.
-   *
-   * @return the target blobs per block
-   */
-  public Optional<String> getTargetBlobsPerBlock() {
-    // TODO SLD EIP-7742 not sure if we should use a default value here or enforce any
-    // "pragueAtGenesis" genesis file (used in devnets) to have this value
-    return JsonUtil.getValueAsString(genesisRoot, "targetblobsperblock");
-  }
-
   /**
    * Gets coinbase.
    *