Remove pass-by-reference return data value from executive (#9211)

* Remove pass-by-reference return data value from executive

* Fix tests

* Fix a missing test output

* typo: wasm_activation_test

* Tracing change in output

* json_tests: fix compile

* typo: 0..32 -> ..32 to keep it consistent with other occurance

* Fix tests

ethcore/vm/src/ext.rs

@@ -101,7 +101,6 @@ pub trait Ext {
 		value: Option<U256>,
 		data: &[u8],
 		code_address: &Address,
-		output: &mut [u8],
 		call_type: CallType
 	) -> MessageCallResult;
 

ethcore/vm/src/tests.rs

@@ -155,7 +155,6 @@ impl Ext for FakeExt {
 			value: Option<U256>,
 			data: &[u8],
 			code_address: &Address,
-			_output: &mut [u8],
 			_call_type: CallType
 		) -> MessageCallResult {