fix(docs): remove completed tasks

Remove completed tasks

Author: Snipa22

README.md

@@ -3,8 +3,6 @@ Golang library for supporting RPC communication with Monero based daemons and RP
 
 # CNUtil
 * address_decode - Complete, all address decoding steps are working properly
-  * Need to implement Base58 XMR decoding to get full address
-  * Implement Keccak-1600 to perform address checksumming for validity
 * convert_blob - Implemented as GetBlockHashingBlob - This function generates the actual hashable string from a block struct
 * construct_block_blob - Implemented as ParseBlockFromTemplateBlob - This function generates the internal block struct from a block template
 * get_block_id - TODO - Keccak256 over the block blob data.  Pack it all together then run the hash