Eliminate redundant uses of format!.

https://github.com/rust-lang-nursery/rust-clippy/wiki#useless_format

lib/wasm/src/module_translator.rs

@@ -254,7 +254,7 @@ pub fn translate_module(
                     .collect()
             }
             ParserState::EndSection => break,
-            _ => return Err(String::from(format!("wrong content in code section"))),
+            _ => return Err(String::from("wrong content in code section")),
         };
         let signature = signatures[functions[function_index as usize] as usize].clone();
         match translate_function_body(