Remove unneeded code (kkrt-labs#536)

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Time spent on this PR: 0,5 days 

## Pull request type

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Please check the type of change your PR introduces:

- [ ] Bugfix
- [ ] Feature
- [ ] Code style update (formatting, renaming)
- [x] Refactoring (no functional changes, no api changes)
- [ ] Build related changes
- [ ] Documentation content changes
- [ ] Other (please describe):

## What is the current behavior?
In the fuction by codelane there is unecessary code.

<!-- Please describe the current behavior that you are modifying, or
link to a relevant issue. -->

Resolves  kkrt-labs#513

## What is the new behavior?

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this PR. -->
Suppression of alloc locals from the body 

-
-
-

## Other information

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screenshots of how the component looks before and after the change. -->

src/kakarot/accounts/contract/contract_account.cairo

@@ -55,7 +55,7 @@ func bytecode{
 func bytecode_len{
     syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr, bitwise_ptr: BitwiseBuiltin*
 }() -> (len: felt) {
-    let len = ContractAccount.bytecode_len();
+    let (len) = ContractAccount.bytecode_len();
     return (len=len);
 }
 

src/kakarot/accounts/contract/library.cairo

@@ -100,11 +100,8 @@ namespace ContractAccount {
         syscall_ptr: felt*,
         pedersen_ptr: HashBuiltin*,
         range_check_ptr,
-        bitwise_ptr: BitwiseBuiltin*,
-    }() -> felt {
-        alloc_locals;
-        let (_bytecode_len) = bytecode_len_.read();
-        return _bytecode_len;
+    }() -> (res: felt) {
+        return bytecode_len_.read();
     }
 
     // @notice This function is used to get the bytecode of the smart contract.