tx_pool: remove old comment from fill_block_template()

src/cryptonote_core/tx_pool.cpp

@@ -1068,10 +1068,6 @@ namespace cryptonote
   //TODO: investigate whether boolean return is appropriate
   bool tx_memory_pool::fill_block_template(block &bl, size_t median_size, uint64_t already_generated_coins, size_t &total_size, uint64_t &fee, uint64_t &expected_reward, uint8_t version)
   {
-    // Warning: This function takes already_generated_
-    // coins as an argument and appears to do nothing
-    // with it.
-
     CRITICAL_REGION_LOCAL(m_transactions_lock);
     CRITICAL_REGION_LOCAL1(m_blockchain);