Fix warnings

examples/interpret.rs

@@ -3,7 +3,7 @@
 extern crate parity_wasm;
 
 use std::env::args;
-use parity_wasm::interpreter::{ModuleInstance, Imports};
+use parity_wasm::interpreter::ModuleInstance;
 
 fn main() {
     let args: Vec<_> = args().collect();

src/interpreter/func.rs

@@ -1,7 +1,6 @@
 use std::rc::Rc;
 use std::fmt;
 use std::collections::HashMap;
-use std::any::Any;
 use elements::{FunctionType, Opcodes, Local};
 use interpreter::{Error, ModuleInstance};
 use interpreter::runner::{prepare_function_args, FunctionContext, Interpreter};

src/interpreter/host.rs

@@ -34,7 +34,7 @@ impl<St> HostModuleBuilder<St> {
 		f: Cl,
 	) {
 		let func_type = FunctionType::new(vec![], Ret::value_type());
-		let host_func = Rc::new(move |state: &mut St, args: &[RuntimeValue]| -> Result<Option<RuntimeValue>, Error> {
+		let host_func = Rc::new(move |state: &mut St, _args: &[RuntimeValue]| -> Result<Option<RuntimeValue>, Error> {
 			let result = f(state);
 			result.map(|r| r.and_then(|r| r.as_return_val()))
 		});

src/interpreter/tests/mod.rs

@@ -3,7 +3,7 @@ mod wabt;
 mod wasm;
 
 mod utils {
-	use elements::{ExportEntry, InitExpr, Opcode, ValueType, GlobalType, GlobalEntry, MemoryType, TableType};
+	use elements::{MemoryType, TableType};
 	use interpreter::{ProgramInstance, HostModuleBuilder, MemoryInstance, TableInstance, GlobalInstance, RuntimeValue};
 	use std::rc::Rc;