Frame remove_all with size limit. (#9106)

* remove prefixed content with limit.

* test match

* factor comment and factor ext limit removal.

* fix benchmark

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

substrate/client/executor/runtime-test/src/lib.rs

@@ -71,7 +71,7 @@ sp_core::wasm_export_functions! {
 	}
 
 	fn test_clear_prefix(input: Vec<u8>) -> Vec<u8> {
-		storage::clear_prefix(&input);
+		storage::clear_prefix(&input, None);
 		b"all ok!".to_vec()
 	}