remove the zkasm format

Signed-off-by: xermicus <cyrill@parity.io>

crates/integration/codesize.json

@@ -1,7 +1,7 @@
 {
   "Baseline": 3917,
   "Computation": 7363,
-  "ERC20": 52714,
+  "ERC20": 50944,
   "Fibonacci": 5965,
   "Flipper": 4336
 }

crates/integration/src/lib.rs

@@ -64,9 +64,11 @@ pub fn compile_blob_with_options(
         .evm
         .as_ref()
         .expect("source should produce EVM output")
-        .assembly_text
+        .bytecode
         .as_ref()
-        .expect("source should produce assembly text");
+        .expect("source should produce assembly text")
+        .object
+        .as_str();
 
     hex::decode(bytecode).expect("hex encoding should always be valid")
 }