remove redendant code + 0.9.0

src/error.rs

@@ -2,11 +2,6 @@ use crate::prelude::*;
 
 #[derive(Debug, Error)]
 pub enum Error {
-    #[error("{field} must be greater than 0")]
-    ChainIdError { field: &'static str },
-
-    #[error(transparent)]
-    ParseError(#[from] std::num::ParseIntError),
 
     #[error("Chain IDs do not match: {0} and {1}")]
     ChainIdMismatch(u32, u32),
@@ -17,18 +12,10 @@ pub enum Error {
     #[error("amount has exceeded MAX_UINT256")]
     MaxUint,
 
-    #[error("Error creating: {0}")]
-    CreationError(String),
-
-    #[error("Can't get the fractional amount: {0}")]
-    CreateFractionalError(String),
-
     #[error("not equal: {0}")]
     NotEqual(String),
 
-    #[error("Denominator is 0")]
-    DenominatorIsZero,
-
+    //Custo
     #[error("incorrect: {0}")]
     Incorrect(String),
 }

src/utils/sorted_insert.rs

@@ -9,11 +9,11 @@ pub fn sorted_insert<T: Clone>(
     comparator: fn(&T, &T) -> Ordering,
 ) -> Result<Option<T>, Error> {
     if max_size == 0 {
-        return Err(Error::Incorrect("MAX_SIZE_ZERO".to_owned()));
+        return Err(Error::Incorrect("max_size can't be equals to zero".to_owned()));
     }
 
     if items.len() > max_size {
-        return Err(Error::Incorrect("ITEMS_SIZE".to_owned()));
+        return Err(Error::Incorrect("items_size has to greater than max_size".to_string()));
     }
 
     let removed_item = if items.len() == max_size {

src/utils/sqrt.rs

@@ -10,7 +10,7 @@ use crate::prelude::*;
 ///
 pub fn sqrt(value: &BigInt) -> Result<BigInt, Error> {
     if !value >= Zero::zero() {
-        return Err(Error::Incorrect("NEGATIVE".to_owned()));
+        return Err(Error::Incorrect("value has to be greater than -1".to_string()));
     }
 
     // If the value is less than or equal to MAX_SAFE_INTEGER,