Remove remaining erc20 references

programs/token/src/lib.rs

@@ -1,5 +1,3 @@
-//! The `erc20` library implements a generic erc20-like token
-
 use log::*;
 use solana_sdk::account::KeyedAccount;
 use solana_sdk::native_program::ProgramError;

programs/token/src/token_program.rs

@@ -1,5 +1,3 @@
-//! ERC20-like Token
-
 use bincode;
 use log::*;
 use serde_derive::{Deserialize, Serialize};