fix: clean up imports (#135)

Author: chungquantin

pop-api/src/lib.rs

@@ -1,6 +1,6 @@
 #![cfg_attr(not(feature = "std"), no_std, no_main)]
 
-use ink::env::chain_extension::{ChainExtensionMethod, FromStatusCode};
+use ink::env::chain_extension::ChainExtensionMethod;
 
 use constants::DECODING_FAILED;
 use ink::env::chain_extension::FromStatusCode;

pop-api/src/v0/assets/fungibles.rs

@@ -1,7 +1,7 @@
 use ink::{env::chain_extension::ChainExtensionMethod, prelude::vec::Vec, scale::Decode};
 
 use crate::{
-	constants::{ASSETS, BALANCES, DECODING_FAILED, DISPATCH, FUNGIBLES, READ_STATE},
+	constants::{ASSETS, BALANCES, DECODING_FAILED, FUNGIBLES},
 	primitives::{AccountId, AssetId, Balance},
 	v0::V0,
 	Result, StatusCode,